| Field Listing :: Disputes - international |
| This entry includes a wide variety of situations that range from traditional bilateral boundary disputes to unilateral claims of one sort or another. Information regarding disputes over international terrestrial and maritime boundaries has been reviewed by the US Department of State. References to other situations involving borders or frontiers may also be included, such as resource disputes, geopolitical questions, or irredentist issues; however, inclusion does not necessarily constitute official acceptance or recognition by the US Government. | |
Country |
Disputes - international |
|---|
| Afghanistan | Afghan, Coalition, and Pakistan military meet periodically to clarify the alignment of the boundary on the ground and on maps; Afghan and Iranian commissioners have discussed boundary monument densification and resurvey; Iran protests Afghanistan's restricting flow of dammed Helmand River tributaries during drought; Pakistan has sent troops across and built fences along some remote tribal areas of its treaty-defined Durand Line border with Afghanistan which serve as bases for foreign terrorists and other illegal activities; Russia remains concerned about the smuggling of poppy derivatives from Afghanistan through Central Asian countries |
| Albania | none |
| Algeria | Algeria and many other states reject Moroccan administration of Western Sahara; the Polisario Front, exiled in Algeria, represents the Sahrawi Arab Democratic Republic; Algeria's border with Morocco remains an irritant to bilateral relations, each nation accusing the other of harboring militants and arms smuggling; dormant disputes include Libyan claims of about 32,000 sq km still reflected on its maps of southeastern Algeria and the National Liberation Front's (FLN) assertions of a claim to Chirac Pastures in southeastern Morocco |
| American Samoa | Tokelau included American Samoa's Swains Island (Olohega) in its 2006 draft independence constitution |
| Andorra | none |
| Angola | Democratic Republic of Congo accuses Angola of shifting monuments |
| Anguilla | none |
| Antarctica | the Antarctic Treaty freezes, and most states do not recognize, the land and maritime territorial claims made by Argentina, Australia, Chile, France, New Zealand, Norway, and the United Kingdom (some overlapping) for three-fourths of the continent; the US and Russia reserve the right to make claims; no formal claims have been made in the sector between 90 degrees west and 150 degrees west; the International Whaling Commission created a sanctuary around the entire continent to deter catches by countries claiming to conduct scientific whaling; Australia has established a similar preserve in the waters around its territorial claim |
| Antigua and Barbuda | none |
| Arctic Ocean | Canada and the United States dispute how to divide the Beaufort Sea and the status of the Northwest Passage but continue to work cooperatively to survey the Arctic continental shelf; Denmark (Greenland) and Norway have made submissions to the Commission on the Limits of the Continental shelf (CLCS) and Russia is collecting additional data to augment its 2001 CLCS submission; record summer melting of sea ice in the Arctic has renewed interest in maritime shipping lanes and sea floor exploration; Norway and Russia signed a comprehensive maritime boundary agreement in 2010 |
| Argentina | Argentina continues to assert its claims to the UK-administered Falkland Islands (Islas Malvinas), South Georgia, and the South Sandwich Islands in its constitution, forcibly occupying the Falklands in 1982, but in 1995 agreed to no longer seek settlement by force; UK continues to reject Argentine requests for sovereignty talks; territorial claim in Antarctica partially overlaps UK and Chilean claims; uncontested dispute between Brazil and Uruguay over Braziliera/Brasiliera Island in the Quarai/Cuareim River leaves the tripoint with Argentina in question; in 2010, the ICJ ruled in favor of Uruguay's operation of two paper mills on the Uruguay River, which forms the border with Argentina; the two countries formed a joint pollution monitoring regime; the joint boundary commission, established by Chile and Argentina in 2001 has yet to map and demarcate the delimited boundary in the inhospitable Andean Southern Ice Field (Campo de Hielo Sur); contraband smuggling, human trafficking, and illegal narcotic trafficking are problems in the porous areas of the border with Bolivia |
| Armenia | the dispute over the break-away Nagorno-Karabakh region and the Armenian military occupation of surrounding lands in Azerbaijan remains the primary focus of regional instability; residents have evacuated the former Soviet-era small ethnic enclaves in Armenia and Azerbaijan; Turkish authorities have complained that blasting from quarries in Armenia might be damaging the medieval ruins of Ani, on the other side of the Arpacay valley; in 2009, Swiss mediators facilitated an accord reestablishing diplomatic ties between Armenia and Turkey, but neither side has ratified the agreement and the rapprochement effort has faltered; local border forces struggle to control the illegal transit of goods and people across the porous, undemarcated Armenian, Azerbaijani, and Georgian borders; ethnic Armenian groups in the Javakheti region of Georgia seek greater autonomy from the Georgian Government |
| Aruba | none |
| Ashmore and Cartier Islands | Australia has closed parts of the Ashmore and Cartier reserve to Indonesian traditional fishing; Indonesian groups challenge Australia's claim to Ashmore Reef |
| Atlantic Ocean | some maritime disputes (see littoral states) |
| Australia | In 2007, Australia and Timor-Leste agreed to a 50-year development zone and revenue sharing arrangement and deferred a maritime boundary; Australia asserts land and maritime claims to Antarctica; Australia's 2004 submission to Commission on the Limits of the Continental Shelf (CLCS) extends its continental margins over 3.37 million square kilometers, expanding its seabed roughly 30 percent beyond its claimed exclusive economic zone; all borders between Indonesia and Australia have been agreed upon bilaterally, but a 1997 treaty that would settle the last of their maritime and Exclusive Economic Zone (EEZ) boundary has yet to be ratified by Indonesia's legislature; Indonesian groups challenge Australia's claim to Ashmore Reef; Australia closed parts of the Ashmore and Cartier reserve to Indonesian traditional fishing |
| Austria | none |
| Azerbaijan | Azerbaijan, Kazakhstan, and Russia ratified the Caspian seabed delimitation treaties based on equidistance, while Iran continues to insist on a one-fifth slice of the sea; the dispute over the break-away Nagorno-Karabakh region and the Armenian military occupation of surrounding lands in Azerbaijan remains the primary focus of regional instability; residents have evacuated the former Soviet-era small ethnic enclaves in Armenia and Azerbaijan; local border forces struggle to control the illegal transit of goods and people across the porous, undemarcated Armenian, Azerbaijani, and Georgian borders; bilateral talks continue with Turkmenistan on dividing the seabed and contested oilfields in the middle of the Caspian |
| Bahamas, The | disagrees with the US on the alignment of the northern axis of a potential maritime boundary |
| Bahrain | none |
| Bangladesh | Bangladesh referred its maritime boundary claims with Burma and India to the International Tribunal on the Law of the Sea; Prime Minister Singh's September 2011 visit to Bangladesh resulted in the signing of a Protocol to the 1974 Land Boundary Agreement between India and Bangladesh, which had called for the settlement of longstanding boundary disputes over undemarcated areas and the exchange of territorial enclaves, but which had never been implemented; Bangladesh struggles to accommodate 29,000 Rohingya, Burmese Muslim minority from Arakan State, living as refugees in Cox's Bazar; Burmese border authorities are constructing a 200 km (124 mi) wire fence designed to deter illegal cross-border transit and tensions from the military build-up along border |
| Barbados | Barbados and Trinidad and Tobago abide by the April 2006 Permanent Court of Arbitration decision delimiting a maritime boundary and limiting catches of flying fish in Trinidad and Tobago's exclusive economic zone; joins other Caribbean states to counter Venezuela's claim that Aves Island sustains human habitation, a criterion under the UN Convention on the Law of the Sea, which permits Venezuela to extend its Economic Exclusion Zone/continental shelf over a large portion of the eastern Caribbean Sea |
| Belarus | boundary demarcated with Latvia and Lithuania; Poland seeks enhanced demarcation and security along this Schengen hard border with financial assistance from the EU |
| Belgium | none |
| Belize | Guatemala persists in its territorial claim to half of Belize, but agrees to the Line of Adjacency to keep Guatemalan squatters out of Belize's forested interior; Belize and Mexico are working to solve minor border demarcation discrepancies arising from inaccuracies in the 1898 border treaty |
| Benin | talks continue between Benin and Togo on funding the Adjrala hydroelectric dam on the Mona River; Benin retains a border dispute with Burkina Faso around the town of Koualou; location of Benin-Niger-Nigeria tripoint is unresolved |
| Bermuda | none |
| Bhutan | lacking any treaty describing the boundary, Bhutan and China continue negotiations to establish a common boundary alignment to resolve territorial disputes arising from substantial cartographic discrepancies, the largest of which lie in Bhutan's northwest and along the Chumbi salient |
| Bolivia | Chile and Peru rebuff Bolivia's reactivated claim to restore the Atacama corridor, ceded to Chile in 1884, but Chile offers instead unrestricted but not sovereign maritime access through Chile for Bolivian natural gas; contraband smuggling, human trafficking, and illegal narcotic trafficking are problems in the porous areas of the border with Argentina |
| Bosnia and Herzegovina | Serbia delimited about half of the boundary with Bosnia and Herzegovina, but sections along the Drina River remain in dispute |
| Botswana | none |
| Bouvet Island | none |
| Brazil | uncontested boundary dispute between Brazil and Uruguay over Braziliera/Brasiliera Island in the Quarai/Cuareim River leaves the tripoint with Argentina in question; smuggling of firearms and narcotics continues to be an issue along the Uruguay-Brazil border; Colombian-organized illegal narcotics and paramilitary activities penetrate Brazil's border region with Venezuela |
| British Indian Ocean Territory | Mauritius and Seychelles claim the Chagos Islands; Negotiations between 1971 and 1982 resulted in the establishment of a trust fund by the British Government as compensation for the displaced islanders, known as Chagossians, who were evicted between 1967-73; in 2001, the former inhabitants of the archipelago were granted UK citizenship and the right of return; in 2006 and 2007, British court rulings invalidated the immigration policies contained in the 2004 BIOT Constitution Order that had excluded the islanders from the archipelago; in 2008 a House of Lords' decision overturned lower court rulings, once again denying the right of return to Chagossians; in addition, the United Kingdom created the world's largest marine protection area around the Chagos islands prohibiting the extraction of any natural resources therein |
| British Virgin Islands | none |
| Brunei | per Letters of Exchange signed in 2009, Malaysia in 2010 ceded two hydrocarbon concession blocks to Brunei in exchange for Brunei's sultan dropping claims to the Limbang corridor, which divides Brunei; nonetheless, Brunei claims a maritime boundary extending as far as a median with Vietnam, thus asserting an implicit claim to Louisa Reef |
| Bulgaria | none |
| Burkina Faso | adding to illicit cross-border activities, Burkina Faso has issues concerning unresolved boundary alignments with its neighbors; demarcation is currently underway with Mali, the dispute with Niger was referred to the ICJ in 2010, and a dispute over several villages with Benin persists; Benin retains a border dispute with Burkina Faso around the town of Koualou |
| Burma | over half of Burma's population consists of diverse ethnic groups who have substantial numbers of kin in neighboring countries; the Naf river on the border with Bangladesh serves as a smuggling and illegal transit route; Bangladesh struggles to accommodate 29,000 Rohingya, Burmese Muslim minority from Arakan State, living as refugees in Cox's Bazar; Burmese border authorities are constructing a 200 km (124 mi) wire fence designed to deter illegal cross-border transit and tensions from the military build-up along border with Bangladesh in 2010; Bangladesh referred its maritime boundary claims with Burma and India to the International Tribunal on the Law of the Sea; Burmese forces attempting to dig in to the largely autonomous Shan State to rout local militias tied to the drug trade, prompts local residents to periodically flee into neighboring Yunnan Province in China; fencing along the India-Burma international border at Manipur's Moreh town is in progress to check illegal drug trafficking and movement of militants; 140,000 mostly Karen refugees fleeing civil strife, political upheaval and economic stagnation in Burma live in remote camps in Thailand near the border |
| Burundi | Burundi and Rwanda dispute two sq km (0.8 sq mi) of Sabanerwa, a farmed area in the Rukurazi Valley where the Akanyaru/Kanyaru River shifted its course southward after heavy rains in 1965; cross-border conflicts persist among Tutsi, Hutu, other ethnic groups, associated political rebels, armed gangs, and various government forces in the Great Lakes region |
| Cambodia | Cambodia is concerned about Laos' extensive upstream dam construction; Cambodia and Thailand dispute sections of boundary; in 2011 Thailand and Cambodia resorted to arms in the dispute over the location of the boundary on the precipice surmounted by Preah Vihear temple ruins, awarded to Cambodia by ICJ decision in 1962 and part of a planned UN World Heritage site; Cambodia accuses Vietnam of a wide variety of illicit cross-border activities; progress on a joint development area with Vietnam is hampered by an unresolved dispute over sovereignty of offshore islands |
| Cameroon | Joint Border Commission with Nigeria reviewed 2002 ICJ ruling on the entire boundary and bilaterally resolved differences, including June 2006 Greentree Agreement that immediately ceded sovereignty of the Bakassi Peninsula to Cameroon with a full phase-out of Nigerian control and patriation of residents in 2008; Cameroon and Nigeria agreed on maritime delimitation in March 2008; sovereignty dispute between Equatorial Guinea and Cameroon over an island at the mouth of the Ntem River; only Nigeria and Cameroon have heeded the Lake Chad Commission's admonition to ratify the delimitation treaty, which also includes the Chad-Niger and Niger-Nigeria boundaries |
| Canada | managed maritime boundary disputes with the US at Dixon Entrance, Beaufort Sea, Strait of Juan de Fuca, and the Gulf of Maine including the disputed Machias Seal Island and North Rock; Canada and the United States dispute how to divide the Beaufort Sea and the status of the Northwest Passage but continue to work cooperatively to survey the Arctic continental shelf; US works closely with Canada to intensify security measures for monitoring and controlling legal and illegal movement of people, transport, and commodities across the international border; sovereignty dispute with Denmark over Hans Island in the Kennedy Channel between Ellesmere Island and Greenland; commencing the collection of technical evidence for submission to the Commission on the Limits of the Continental Shelf in support of claims for continental shelf beyond 200 nautical miles from its declared baselines in the Arctic, as stipulated in Article 76, paragraph 8, of the United Nations Convention on the Law of the Sea |
| Cape Verde | none |
| Cayman Islands | none |
| Central African Republic | periodic skirmishes over water and grazing rights among related pastoral populations along the border with southern Sudan persist |
| Chad | since 2003, ad hoc armed militia groups and the Sudanese military have driven hundreds of thousands of Darfur residents into Chad; Chad wishes to be a helpful mediator in resolving the Darfur conflict, and in 2010 established a joint border monitoring force with Sudan, which has helped to reduce cross-border banditry and violence; only Nigeria and Cameroon have heeded the Lake Chad Commission's admonition to ratify the delimitation treaty, which also includes the Chad-Niger and Niger-Nigeria boundaries |
| Chile | Chile and Peru rebuff Bolivia's reactivated claim to restore the Atacama corridor, ceded to Chile in 1884, but Chile has offered instead unrestricted but not sovereign maritime access through Chile to Bolivian natural gas; Chile rejects Peru's unilateral legislation to change its latitudinal maritime boundary with Chile to an equidistance line with a southwestern axis favoring Peru; in October 2007, Peru took its maritime complaint with Chile to the ICJ; territorial claim in Antarctica (Chilean Antarctic Territory) partially overlaps Argentine and British claims; the joint boundary commission, established by Chile and Argentina in 2001, has yet to map and demarcate the delimited boundary in the inhospitable Andean Southern Ice Field (Campo de Hielo Sur) |
| China | continuing talks and confidence-building measures work toward reducing tensions over Kashmir that nonetheless remains militarized with portions under the de facto administration of China (Aksai Chin), India (Jammu and Kashmir), and Pakistan (Azad Kashmir and Northern Areas); India does not recognize Pakistan's ceding historic Kashmir lands to China in 1964; China and India continue their security and foreign policy dialogue started in 2005 related to the dispute over most of their rugged, militarized boundary, regional nuclear proliferation, and other matters; China claims most of India's Arunachal Pradesh to the base of the Himalayas; lacking any treaty describing the boundary, Bhutan and China continue negotiations to establish a common boundary alignment to resolve territorial disputes arising from substantial cartographic discrepancies, the largest of which lie in Bhutan's northwest and along the Chumbi salient; Burmese forces attempting to dig in to the largely autonomous Shan State to rout local militias tied to the drug trade, prompts local residents to periodically flee into neighboring Yunnan Province in China; Chinese maps show an international boundary symbol off the coasts of the littoral states of the South China Seas, where China has interrupted Vietnamese hydrocarbon exploration; China asserts sovereignty over Scarborough Reef along with the Philippines and Taiwan, and over the Spratly Islands together with Malaysia, the Philippines, Taiwan, Vietnam, and Brunei; the 2002 Declaration on the Conduct of Parties in the South China Sea eased tensions in the Spratlys but is not the legally binding code of conduct sought by some parties; Vietnam and China continue to expand construction of facilities in the Spratlys and in March 2005, the national oil companies of China, the Philippines, and Vietnam signed a joint accord on marine seismic activities in the Spratly Islands; China occupies some of the Paracel Islands also claimed by Vietnam and Taiwan; China and Taiwan continue to reject both Japan's claims to the uninhabited islands of Senkaku-shoto (Diaoyu Tai) and Japan's unilaterally declared equidistance line in the East China Sea, the site of intensive hydrocarbon exploration and exploitation; certain islands in the Yalu and Tumen rivers are in dispute with North Korea; North Korea and China seek to stem illegal migration to China by North Koreans, fleeing privations and oppression, by building a fence along portions of the border and imprisoning North Koreans deported by China; China and Russia have demarcated the once disputed islands at the Amur and Ussuri confluence and in the Argun River in accordance with their 2004 Agreement; China and Tajikistan have begun demarcating the revised boundary agreed to in the delimitation of 2002; the decade-long demarcation of the China-Vietnam land boundary was completed in 2009; citing environmental, cultural, and social concerns, China has reconsidered construction of 13 dams on the Salween River, but energy-starved Burma, with backing from Thailand, remains intent on building five hydro-electric dams downstream despite regional and international protests; Chinese and Hong Kong authorities met in March 2008 to resolve ownership and use of lands recovered in Shenzhen River channelization, including 96-hectare Lok Ma Chau Loop; Hong Kong developing plans to reduce 2,000 out of 2,800 hectares of its restricted Closed Area by 2010 |
| Christmas Island | none |
| Clipperton Island | none |
| Cocos (Keeling) Islands | none |
| Colombia | in December 2007, ICJ allocated San Andres, Providencia, and Santa Catalina islands to Colombia under 1928 Treaty but did not rule on 82 degrees W meridian as maritime boundary with Nicaragua; managed dispute with Venezuela over maritime boundary and Venezuelan-administered Los Monjes Islands near the Gulf of Venezuela; Colombian-organized illegal narcotics, guerrilla, and paramilitary activities penetrate all neighboring borders and have caused Colombian citizens to flee mostly into neighboring countries; Colombia, Honduras, Nicaragua, Jamaica, and the US assert various claims to Bajo Nuevo and Serranilla Bank |
| Comoros | claims French-administered Mayotte and challenges France's and Madagascar's claims to Banc du Geyser, a drying reef in the Mozambique Channel; in May 2008, African Union forces were called in to assist the Comoros military recapture Anjouan Island from rebels who seized it in 2001 |
| Congo, Democratic Republic of the | heads of the Great Lakes states and UN pledged in 2004 to abate tribal, rebel, and militia fighting in the region, including northeast Congo, where the UN Organization Mission in the Democratic Republic of the Congo (MONUC), organized in 1999, maintains over 16,500 uniformed peacekeepers; members of Uganda's Lords Resistance Army forces continue to seek refuge in Congo's Garamba National Park as peace talks with the Uganda government evolve; the location of the boundary in the broad Congo River with the Republic of the Congo is indefinite except in the Pool Malebo/Stanley Pool area; Uganda and DRC dispute Rukwanzi Island in Lake Albert and other areas on the Semliki River with hydrocarbon potential; boundary commission continues discussions over Congolese-administered triangle of land on the right bank of the Lunkinda River claimed by Zambia near the DRC village of Pweto; DRC accuses Angola of shifting monuments |
| Congo, Republic of the | the location of the boundary in the broad Congo River with the Democratic Republic of the Congo is undefined except in the Pool Malebo/Stanley Pool area |
| Cook Islands | none |
| Coral Sea Islands | none |
| Costa Rica | the ICJ had given Costa Rica until January 2008 to reply and Nicaragua until July 2008 to rejoin before rendering its decision on the navigation, security, and commercial rights of Costa Rican vessels on the Rio San Juan over which Nicaragua retains sovereignty |
| Cote d'Ivoire | despite the presence of over 9,000 UN forces (UNOCI) in Cote d'Ivoire since 2004, ethnic conflict still leaves displaced hundreds of thousands of Ivoirians in and out of the country as well as driven out migrants from neighboring states who worked in Ivorian cocoa plantations; the March 2007 peace deal between Ivorian rebels and the government brought significant numbers of rebels out of hiding in neighboring states |
| Croatia | dispute remains with Bosnia and Herzegovina over several small sections of the boundary related to maritime access that hinders ratification of the 1999 border agreement; the Croatia-Slovenia land and maritime boundary agreement, which would have ceded most of Pirin Bay and maritime access to Slovenia and several villages to Croatia, remains unratified and in dispute; Slovenia also protests Croatia's 2003 claim to an exclusive economic zone in the Adriatic; as a European Union peripheral state, Slovenia imposed a hard border Schengen regime with non-member Croatia in December 2007 |
| Cuba | US Naval Base at Guantanamo Bay is leased to US and only mutual agreement or US abandonment of the facility can terminate the lease |
| Cyprus | hostilities in 1974 divided the island into two de facto autonomous entities, the internationally recognized Cypriot Government and a Turkish-Cypriot community (north Cyprus); the 1,000-strong UN Peacekeeping Force in Cyprus (UNFICYP) has served in Cyprus since 1964 and maintains the buffer zone between north and south; on 1 May 2004, Cyprus entered the European Union still divided, with the EU's body of legislation and standards (acquis communitaire) suspended in the north; Turkey protests Cypriot Government creating hydrocarbon blocks and maritime boundary with Lebanon in March 2007 |
| Czech Republic | while threats of international legal action never materialized in 2007, 915,220 Austrians, with the support of the popular Freedom Party, signed a petition in January 2008, demanding that Austria block the Czech Republic's accession to the EU unless Prague closes its controversial Soviet-style nuclear plant in Temelin, bordering Austria |
| Denmark | Iceland, the UK, and Ireland dispute Denmark's claim that the Faroe Islands' continental shelf extends beyond 200 nm; Faroese continue to study proposals for full independence; sovereignty dispute with Canada over Hans Island in the Kennedy Channel between Ellesmere Island and Greenland; Denmark (Greenland) and Norway have made submissions to the Commission on the Limits of the Continental Shelf (CLCS) and Russia is collecting additional data to augment its 2001 CLCS submission |
| Djibouti | Djibouti maintains economic ties and border accords with "Somaliland" leadership while maintaining some political ties to various factions in Somalia; Kuwait is chief investor in the 2008 restoration and upgrade of the Ethiopian-Djibouti rail link; in 2008, Eritrean troops moved across the border on Ras Doumera peninsula and occupied Doumera Island with undefined sovereignty in the Red Sea |
| Dominica | Dominica is the only Caribbean state to challenge Venezuela's sovereignty claim over Aves Island and joins the other island nations in challenging whether the feature sustains human habitation, a criterion under the UN Convention on the Law of the Sea (UNCLOS), which permits Venezuela to extend its Exclusive Economic Zone (EEZ) and continental shelf claims over a large portion of the eastern Caribbean Sea |
| Dominican Republic | Haitian migrants cross the porous border into the Dominican Republic to find work; illegal migrants from the Dominican Republic cross the Mona Passage each year to Puerto Rico to find better work |
| Ecuador | organized illegal narcotics operations in Colombia penetrate across Ecuador's shared border, which thousands of Colombians also cross to escape the violence in their home country |
| Egypt | Sudan claims but Egypt de facto administers security and economic development of Halaib region north of the 22nd parallel boundary; Egypt no longer shows its administration of the Bir Tawil trapezoid in Sudan on its maps; Gazan breaches in the security wall with Egypt in January 2008 highlight difficulties in monitoring the Sinai border; Saudi Arabia claims Egyptian-administered islands of Tiran and Sanafir |
| El Salvador | International Court of Justice (ICJ) ruled on the delimitation of "bolsones" (disputed areas) along the El Salvador-Honduras boundary, in 1992, with final agreement by the parties in 2006 after an Organization of American States survey and a further ICJ ruling in 2003; the 1992 ICJ ruling advised a tripartite resolution to a maritime boundary in the Gulf of Fonseca advocating Honduran access to the Pacific; El Salvador continues to claim tiny Conejo Island, not identified in the ICJ decision, off Honduras in the Gulf of Fonseca |
| Equatorial Guinea | in 2002, ICJ ruled on an equidistance settlement of Cameroon-Equatorial Guinea-Nigeria maritime boundary in the Gulf of Guinea, but a dispute between Equatorial Guinea and Cameroon over an island at the mouth of the Ntem River and imprecisely defined maritime coordinates in the ICJ decision delayed final delimitation; UN urged Equatorial Guinea and Gabon to resolve the sovereignty dispute over Gabon-occupied Mbane and lesser islands and to create a maritime boundary in the hydrocarbon-rich Corisco Bay |
| Eritrea | Eritrea and Ethiopia agreed to abide by 2002 Ethiopia-Eritrea Boundary Commission's (EEBC) delimitation decision but, neither party responded to the revised line detailed in the November 2006 EEBC Demarcation Statement; Sudan accuses Eritrea of supporting eastern Sudanese rebel groups; in 2008 Eritrean troops moved across the border on Ras Doumera peninsula and occupied Doumera Island with undefined sovereignty in the Red Sea |
| Estonia | Russia and Estonia in May 2005 signed a technical border agreement, but Russia in June 2005 recalled its signature after the Estonian parliament added to its domestic ratification act a historical preamble referencing the Soviet occupation and Estonia's pre-war borders under the 1920 Treaty of Tartu; Russia contends that the preamble allows Estonia to make territorial claims on Russia in the future, while Estonian officials deny that the preamble has any legal impact on the treaty text; Russia demands better treatment of the Russian-speaking population in Estonia; as a member state that forms part of the EU's external border, Estonia implements strict Schengen border rules with Russia |
| Ethiopia | Eritrea and Ethiopia agreed to abide by the 2002 Eritrea-Ethiopia Boundary Commission's (EEBC) delimitation decision, but neither party responded to the revised line detailed in the November 2006 EEBC Demarcation Statement; the undemarcated former British administrative line has little meaning as a political separation to rival clans within Ethiopia's Ogaden and southern Somalia's Oromo region; Ethiopian forces invaded southern Somalia and routed Islamist Courts from Mogadishu in January 2007; "Somaliland" secessionists provide port facilities in Berbera and trade ties to landlocked Ethiopia; civil unrest in eastern Sudan has hampered efforts to demarcate the porous boundary with Ethiopia |
| European Union | as a political union, the EU has no border disputes with neighboring countries, but Estonia has no land boundary agreements with Russia, Slovenia disputes its land and maritime boundaries with Croatia, and Spain has territorial and maritime disputes with Morocco and with the UK over Gibraltar; the EU has set up a Schengen area - consisting of 22 EU member states that have signed the convention implementing the Schengen agreements or "acquis" (1985 and 1990) on the free movement of persons and the harmonization of border controls in Europe; these agreements became incorporated into EU law with the implementation of the 1997 Treaty of Amsterdam on 1 May 1999; in addition, non-EU states Iceland and Norway (as part of the Nordic Union) have been included in the Schengen area since 1996 (full members in 2001), Switzerland since 2008, and Liechtenstein since 2011 bringing the total current membership to 26; the UK (since 2000) and Ireland (since 2002) take part in only some aspects of the Schengen area, especially with respect to police and criminal matters; nine of the 12 new member states that joined the EU since 2004 joined Schengen on 21 December 2007; of the three remaining EU states, Romania and Bulgaria may join by late 2012, while Cyprus' entry is held up by the ongoing Cyprus dispute |
| Falkland Islands (Islas Malvinas) | Argentina, which claims the islands in its constitution and briefly occupied them by force in 1982, agreed in 1995 to no longer seek settlement by force; UK continues to reject Argentine requests for sovereignty talks |
| Faroe Islands | because anticipated offshore hydrocarbon resources have not been realized, earlier Faroese proposals for full independence have been deferred; Iceland, the UK, and Ireland dispute Denmark's claim that the Faroe Islands' continental shelf extends beyond 200 nm |
| Fiji | none |
| Finland | various groups in Finland advocate restoration of Karelia and other areas ceded to the Soviet Union, but the Finnish Government asserts no territorial demands |
| France | Madagascar claims the French territories of Bassas da India, Europa Island, Glorioso Islands, and Juan de Nova Island; Comoros claims Mayotte; Mauritius claims Tromelin Island; territorial dispute between Suriname and the French overseas department of French Guiana; France asserts a territorial claim in Antarctica (Adelie Land); France and Vanuatu claim Matthew and Hunter Islands, east of New Caledonia |
| French Polynesia | none |
| French Southern and Antarctic Lands |
French claim to "Adelie Land" in Antarctica is not recognized by the US
Bassas da India, Europa Island, Glorioso Islands, Juan de Nova Island (Iles Eparses): claimed by Madagascar; the vegetated drying cays of Banc du Geyser, which were claimed by Madagascar in 1976, also fall within the EEZ claims of the Comoros and France (Glorioso Islands) Tromelin Island (Iles Eparses): claimed by Mauritius |
| Gabon | UN urges Equatorial Guinea and Gabon to resolve the sovereignty dispute over Gabon-occupied Mbane Island and lesser islands and to establish a maritime boundary in hydrocarbon-rich Corisco Bay |
| Gambia, The | attempts to stem refugees, cross-border raids, arms smuggling, and other illegal activities by separatists from southern Senegal's Casamance region, as well as from conflicts in other west African states |
| Gaza Strip | the current status of Gaza Strip is subject to the Israeli-Palestinian Interim Agreement with permanent status to be determined through further negotiation; Israel removed settlers and military personnel from Gaza Strip in August 2005 |
| Georgia | Russia's military support and subsequent recognition of Abkhazia and South Ossetia independence in 2008 continue to sour relations with Georgia |
| Germany | none |
| Ghana | Ghana struggles to accommodate returning nationals who worked in the cocoa plantations and escaped fighting in Cote d'Ivoire |
| Gibraltar | in 2002, Gibraltar residents voted overwhelmingly by referendum to reject any "shared sovereignty" arrangement; the government of Gibraltar insists on equal participation in talks between the UK and Spain; Spain disapproves of UK plans to grant Gibraltar even greater autonomy |
| Greece | Greece and Turkey continue discussions to resolve their complex maritime, air, territorial, and boundary disputes in the Aegean Sea; Greece rejects the use of the name Macedonia or Republic of Macedonia; the mass migration of unemployed Albanians still remains a problem for developed countries, chiefly Greece and Italy |
| Greenland | managed dispute between Canada and Denmark over Hans Island in the Kennedy Channel between Canada's Ellesmere Island and Greenland; Denmark (Greenland) and Norway have made submissions to the Commission on the Limits of the Continental shelf (CLCS) and Russia is collecting additional data to augment its 2001 CLCS submission |
| Grenada | none |
| Guam | none |
| Guatemala | annual ministerial meetings under the Organization of American States-initiated Agreement on the Framework for Negotiations and Confidence Building Measures continue to address Guatemalan land and maritime claims in Belize and the Caribbean Sea; Guatemala persists in its territorial claim to half of Belize, but agrees to Line of Adjacency to keep Guatemalan squatters out of Belize's forested interior; Mexico must deal with thousands of impoverished Guatemalans and other Central Americans who cross the porous border looking for work in Mexico and the United States |
| Guernsey | none |
| Guinea | conflicts among rebel groups, warlords, and youth gangs in neighboring states have spilled over into Guinea resulting in domestic instability; Sierra Leone considers Guinea's definition of the flood plain limits to define the left bank boundary of the Makona and Moa rivers excessive and protests Guinea's continued occupation of these lands, including the hamlet of Yenga, occupied since 1998 |
| Guinea-Bissau | in 2006, political instability within Senegal's Casamance region resulted in thousands of Senegalese refugees, cross-border raids, and arms smuggling into Guinea-Bissau |
| Guyana | all of the area west of the Essequibo River is claimed by Venezuela preventing any discussion of a maritime boundary; Guyana has expressed its intention to join Barbados in asserting claims before UN Convention on the Law of the Sea (UNCLOS) that Trinidad and Tobago's maritime boundary with Venezuela extends into their waters; Suriname claims a triangle of land between the New and Kutari/Koetari rivers in a historic dispute over the headwaters of the Courantyne; Guyana seeks arbitration under provisions of the UNCLOS to resolve the long-standing dispute with Suriname over the axis of the territorial sea boundary in potentially oil-rich waters |
| Haiti | since 2004, about 8,000 peacekeepers from the UN Stabilization Mission in Haiti maintain civil order in Haiti; despite efforts to control illegal migration, Haitians cross into the Dominican Republic and sail to neighboring countries; Haiti claims US-administered Navassa Island |
| Heard Island and McDonald Islands | none |
| Holy See (Vatican City) | none |
| Honduras | International Court of Justice (ICJ) ruled on the delimitation of "bolsones" (disputed areas) along the El Salvador-Honduras border in 1992 with final settlement by the parties in 2006 after an Organization of American States survey and a further ICJ ruling in 2003; the 1992 ICJ ruling advised a tripartite resolution to a maritime boundary in the Gulf of Fonseca with consideration of Honduran access to the Pacific; El Salvador continues to claim tiny Conejo Island, not mentioned in the ICJ ruling, off Honduras in the Gulf of Fonseca; Honduras claims the Belizean-administered Sapodilla Cays off the coast of Belize in its constitution, but agreed to a joint ecological park around the cays should Guatemala consent to a maritime corridor in the Caribbean under the OAS-sponsored 2002 Belize-Guatemala Differendum |
| Hong Kong | none |
| Howland Island | none |
| Hungary | bilateral government, legal, technical and economic working group negotiations continue in 2006 with Slovakia over Hungary's failure to complete its portion of the Gabcikovo-Nagymaros hydroelectric dam project along the Danube; as a member state that forms part of the EU's external border, Hungary has implemented the strict Schengen border rules |
| Iceland | Iceland, the UK, and Ireland dispute Denmark's claim that the Faroe Islands' continental shelf extends beyond 200 nm; the European Free Trade Association Surveillance Authority filed a suit against Iceland, claiming the country violated the European Economic Area agreement in failing to pay minimum compensation to Icesave depositors |
| India | since China and India launched a security and foreign policy dialogue in 2005, consolidated discussions related to the dispute over most of their rugged, militarized boundary, regional nuclear proliferation, Indian claims that China transferred missiles to Pakistan, and other matters continue; Kashmir remains the site of the world's largest and most militarized territorial dispute with portions under the de facto administration of China (Aksai Chin), India (Jammu and Kashmir), and Pakistan (Azad Kashmir and Northern Areas); India and Pakistan resumed bilateral dialogue in February 2011 after a two-year hiatus, have maintained the 2003 cease-fire in Kashmir, and continue to have disputes over water sharing of the Indus River and its tributaries; UN Military Observer Group in India and Pakistan has maintained a small group of peacekeepers since 1949; India does not recognize Pakistan's ceding historic Kashmir lands to China in 1964; to defuse tensions and prepare for discussions on a maritime boundary, India and Pakistan seek technical resolution of the disputed boundary in Sir Creek estuary at the mouth of the Rann of Kutch in the Arabian Sea; Pakistani maps continue to show its Junagadh claim in Indian Gujarat State; Prime Minister Singh's September 2011 visit to Bangladesh resulted in the signing of a Protocol to the 1974 Land Boundary Agreement between India and Bangladesh, which had called for the settlement of longstanding boundary disputes over undemarcated areas and the exchange of territorial enclaves, but which had never been implemented; Bangladesh referred its maritime boundary claims with Burma and India to the International Tribunal on the Law of the Sea; Joint Border Committee with Nepal continues to examine contested boundary sections, including the 400 square kilometer dispute over the source of the Kalapani River; India maintains a strict border regime to keep out Maoist insurgents and control illegal cross-border activities from Nepal |
| Indian Ocean | some maritime disputes (see littoral states) |
| Indonesia | Indonesia has a stated foreign policy objective of establishing stable fixed land and maritime boundaries with all of its neighbors; three stretches of land borders with Timor-Leste have yet to be delimited, two of which are in the Oecussi exclave area, and no maritime or Exclusive Economic Zone (EEZ) boundaries have been established between the countries; many refugees from Timor-Leste who left in 2003 still reside in Indonesia and refuse repatriation; all borders between Indonesia and Australia have been agreed upon bilaterally, but a 1997 treaty that would settle the last of their maritime and EEZ boundary has yet to be ratified by Indonesia's legislature; Indonesian groups challenge Australia's claim to Ashmore Reef; Australia has closed parts of the Ashmore and Cartier Reserve to Indonesian traditional fishing and placed restrictions on certain catches ; land and maritime negotiations with Malaysia are ongoing, and disputed areas include the controversial Tanjung Datu and Camar Wulan border area in Borneo and the maritime boundary in the Ambalat oil block in the Celebes Sea; Indonesia and Singapore continue to work on finalizing their 1973 maritime boundary agreement by defining unresolved areas north of Indonesia's Batam Island; Indonesian secessionists, squatters, and illegal migrants create repatriation problems for Papua New Guinea; maritime delimitation talks continue with Palau; EEZ negotiations with Vietnam are ongoing, and the two countries in Fall 2011 agreed to work together to reduce illegal fishing along their maritime boundary |
| Iran | Iran protests Afghanistan's limiting flow of dammed Helmand River tributaries during drought; Iraq's lack of a maritime boundary with Iran prompts jurisdiction disputes beyond the mouth of the Shatt al Arab in the Persian Gulf; Iran and UAE dispute Tunb Islands and Abu Musa Island, which are occupied by Iran; Azerbaijan, Kazakhstan, and Russia ratified Caspian seabed delimitation treaties based on equidistance, while Iran continues to insist on a one-fifth slice of the sea; Afghan and Iranian commissioners have discussed boundary monument densification and resurvey |
| Iraq | approximately two million Iraqis have fled the conflict in Iraq, with the majority taking refuge in Syria and Jordan, and lesser numbers to Egypt, Lebanon, Iran, and Turkey; Iraq's lack of a maritime boundary with Iran prompts jurisdiction disputes beyond the mouth of the Shatt al Arab in the Persian Gulf; Turkey has expressed concern over the autonomous status of Kurds in Iraq |
| Ireland | Ireland, Iceland, and the UK dispute Denmark's claim that the Faroe Islands' continental shelf extends beyond 200 nm |
| Isle of Man | none |
| Israel | West Bank and Gaza Strip are Israeli-occupied with current status subject to the Israeli-Palestinian Interim Agreement - permanent status to be determined through further negotiation; Israel continues construction of a "seam line" separation barrier along parts of the Green Line and within the West Bank; Israel withdrew its settlers and military from the Gaza Strip and from four settlements in the West Bank in August 2005; Golan Heights is Israeli-occupied (Lebanon claims the Shab'a Farms area of Golan Heights); since 1948, about 350 peacekeepers from the UN Truce Supervision Organization headquartered in Jerusalem monitor ceasefires, supervise armistice agreements, prevent isolated incidents from escalating, and assist other UN personnel in the region |
| Italy | Italy's long coastline and developed economy entices tens of thousands of illegal immigrants from southeastern Europe and northern Africa |
| Jamaica | none |
| Jan Mayen | none |
| Japan | the sovereignty dispute over the islands of Etorofu, Kunashiri, and Shikotan, and the Habomai group, known in Japan as the "Northern Territories" and in Russia as the "Southern Kuril Islands," occupied by the Soviet Union in 1945, now administered by Russia and claimed by Japan, remains the primary sticking point to signing a peace treaty formally ending World War II hostilities; Japan and South Korea claim Liancourt Rocks (Take-shima/Tok-do) occupied by South Korea since 1954; China and Taiwan dispute both Japan's claims to the uninhabited islands of the Senkaku-shoto (Diaoyu Tai) and Japan's unilaterally declared exclusive economic zone in the East China Sea, the site of intensive hydrocarbon prospecting |
| Jarvis Island | none |
| Jersey | none |
| Johnston Atoll | none |
| Jordan | 2004 Agreement settles border dispute with Syria pending demarcation |
| Kazakhstan | Kyrgyzstan has yet to ratify the 2001 boundary delimitation with Kazakhstan; field demarcation of the boundaries commenced with Uzbekistan in 2004 and with Turkmenistan in 2005; ongoing demarcation with Russia began in 2007; demarcation with China was completed in 2002; creation of a seabed boundary with Turkmenistan in the Caspian Sea remains under discussion; Azerbaijan, Kazakhstan, and Russia ratified Caspian seabed delimitation treaties based on equidistance, while Iran continues to insist on a one-fifth slice of the sea |
| Kenya | Kenya served as an important mediator in brokering Sudan's north-south separation in February 2005; Kenya provides shelter to almost a quarter million refugees, including Ugandans who flee across the border periodically to seek protection from Lord's Resistance Army rebels; Kenya works hard to prevent the clan and militia fighting in Somalia from spreading across the border, which has long been open to nomadic pastoralists; the boundary that separates Kenya's and Sudan's sovereignty is unclear in the "Ilemi Triangle," which Kenya has administered since colonial times |
| Kingman Reef | none |
| Kiribati | none |
| Korea, North | risking arrest, imprisonment, and deportation, tens of thousands of North Koreans cross into China to escape famine, economic privation, and political oppression; North Korea and China dispute the sovereignty of certain islands in Yalu and Tumen rivers; Military Demarcation Line within the 4-km-wide Demilitarized Zone has separated North from South Korea since 1953; periodic incidents in the Yellow Sea with South Korea which claims the Northern Limiting Line as a maritime boundary; North Korea supports South Korea in rejecting Japan's claim to Liancourt Rocks (Tok-do/Take-shima) |
| Korea, South | Military Demarcation Line within the 4-km-wide Demilitarized Zone has separated North from South Korea since 1953; periodic incidents with North Korea in the Yellow Sea over the Northern Limit Line, which South Korea claims as a maritime boundary; South Korea and Japan claim Liancourt Rocks (Tok-do/Take-shima), occupied by South Korea since 1954 |
| Kosovo | Serbia with several other states protest the US and other states' recognition of Kosovo's declaration of its status as a sovereign and independent state in February 2008; ethnic Serbian municipalities along Kosovo's northern border challenge final status of Kosovo-Serbia boundary; several thousand NATO-led Kosovo Force peacekeepers under United Nations Interim Administration Mission in Kosovo authority continue to keep the peace within Kosovo between the ethnic Albanian majority and the Serb minority in Kosovo; Kosovo and Macedonia completed demarcation of their boundary in September 2008 |
| Kuwait | Kuwait and Saudi Arabia continue negotiating a joint maritime boundary with Iran; no maritime boundary exists with Iraq in the Persian Gulf |
| Kyrgyzstan | Kyrgyzstan has yet to ratify the 2001 boundary delimitation with Kazakhstan; disputes in Isfara Valley delay completion of delimitation with Tajikistan; delimitation of 130 km of border with Uzbekistan is hampered by serious disputes over enclaves and other areas |
| Laos | southeast Asian states have enhanced border surveillance to check the spread of avian flu; talks continue on completion of demarcation with Thailand but disputes remain over islands in the Mekong River; concern among Mekong Commission members that China's construction of dams on the Mekong River and its tributaries will affect water levels; Cambodia is concerned about Laos' extensive upstream dam construction |
| Latvia | Russia demands better Latvian treatment of ethnic Russians in Latvia; boundary demarcated with Latvia and Lithuania; the Latvian parliament has not ratified its 1998 maritime boundary treaty with Lithuania, primarily due to concerns over oil exploration rights; as a member state that forms part of the EU's external border, Latvia has implemented the strict Schengen border rules with Russia |
| Lebanon | lacking a treaty or other documentation describing the boundary, portions of the Lebanon-Syria boundary are unclear with several sections in dispute; since 2000, Lebanon has claimed Shab'a Farms area in the Israeli-occupied Golan Heights; the roughly 2,000-strong UN Interim Force in Lebanon has been in place since 1978 |
| Lesotho | none |
| Liberia | although civil unrest continues to abate with the assistance of 18,000 UN Mission in Liberia peacekeepers, as of January 2007, Liberian refugees still remain in Guinea, Cote d'Ivoire, Sierra Leone, and Ghana; Liberia, in turn, shelters refugees fleeing turmoil in Cote d'Ivoire; despite the presence of over 9,000 UN forces in Cote d'Ivoire since 2004, ethnic conflict continues to spread into neighboring states who can no longer send their migrant workers to Ivorian cocoa plantations; UN sanctions ban Liberia from exporting diamonds and timber |
| Libya | dormant disputes include Libyan claims of about 32,000 sq km still reflected on its maps of southeastern Algeria and the FLN's assertions of a claim to Chirac Pastures in southeastern Morocco; various Chadian rebels from the Aozou region reside in southern Libya |
| Liechtenstein | none |
| Lithuania | Lithuania and Russia committed to demarcating their boundary in 2006 in accordance with the land and maritime treaty ratified by Russia in May 2003 and by Lithuania in 1999; Lithuania operates a simplified transit regime for Russian nationals traveling from the Kaliningrad coastal exclave into Russia, while still conforming, as a EU member state having an external border with a non-EU member, to strict Schengen border rules; boundary demarcated with Latvia and Lithuania; as of January 2007, ground demarcation of the boundary with Belarus was complete and mapped with final ratification documents in preparation |
| Luxembourg | none |
| Macau | none |
| Macedonia | Kosovo and Macedonia completed demarcation of their boundary in September 2008; Greece continues to reject the use of the name Macedonia or Republic of Macedonia |
| Madagascar | claims Bassas da India, Europa Island, Glorioso Islands, and Juan de Nova Island (all administered by France); the vegetated drying cays of Banc du Geyser, which were claimed by Madagascar in 1976, also fall within the EEZ claims of the Comoros and France (Glorioso Islands, part of the French Southern and Antarctic Lands) |
| Malawi | disputes with Tanzania over the boundary in Lake Nyasa (Lake Malawi) and the meandering Songwe River remain dormant |
| Malaysia | while the 2002 "Declaration on the Conduct of Parties in the South China Sea" has eased tensions over the Spratly Islands, it is not the legally binding "code of conduct" sought by some parties; Malaysia was not party to the March 2005 joint accord among the national oil companies of China, the Philippines, and Vietnam on conducting marine seismic activities in the Spratly Islands; disputes continue over deliveries of fresh water to Singapore, Singapore's land reclamation, bridge construction, and maritime boundaries in the Johor and Singapore Straits; in 2008, ICJ awarded sovereignty of Pedra Branca (Pulau Batu Puteh/Horsburgh Island) to Singapore, and Middle Rocks to Malaysia, but did not rule on maritime regimes, boundaries, or disposition of South Ledge; land and maritime negotiations with Indonesia are ongoing, and disputed areas include the controversial Tanjung Datu and Camar Wulan border area in Borneo and the maritime boundary in the Ambalat oil block in the Celebes Sea; separatist violence in Thailand's predominantly Muslim southern provinces prompts measures to close and monitor border with Malaysia to stem terrorist activities; Philippines retains a dormant claim to Malaysia's Sabah State in northern Borneo; Per Letters of Exchange signed in 2009, Malaysia in 2010 ceded two hydrocarbon concession blocks to Brunei in exchange for Brunei's sultan dropping claims to the Limbang corridor, which divides Brunei; piracy remains a problem in the Malacca Strait |
| Maldives | none |
| Mali | demarcation is underway with Burkina Faso |
| Malta | none |
| Marshall Islands | claims US territory of Wake Island |
| Mauritania | Mauritanian claims to Western Sahara remain dormant |
| Mauritius | Mauritius and Seychelles claim the Chagos Islands; claims French-administered Tromelin Island |
| Mexico | abundant rainfall in recent years along much of the Mexico-US border region has ameliorated periodically strained water-sharing arrangements; the US has intensified security measures to monitor and control legal and illegal personnel, transport, and commodities across its border with Mexico; Mexico must deal with thousands of impoverished Guatemalans and other Central Americans who cross the porous border looking for work in Mexico and the United States; Belize and Mexico are working to solve minor border demarcation discrepancies arising from inaccuracies in the 1898 border treaty |
| Micronesia, Federated States of | none |
| Midway Islands | none |
| Moldova | Moldova and Ukraine operate joint customs posts to monitor the transit of people and commodities through Moldova's break-away Transnistria region, which remains under Organization for Security and Cooperation in Europe supervision |
| Monaco | none |
| Mongolia | none |
| Montenegro | none |
| Montserrat | none |
| Morocco | claims and administers Western Sahara whose sovereignty remains unresolved; Morocco protests Spain's control over the coastal enclaves of Ceuta, Melilla, and Penon de Velez de la Gomera, the islands of Penon de Alhucemas and Islas Chafarinas, and surrounding waters; both countries claim Isla Perejil (Leila Island); discussions have not progressed on a comprehensive maritime delimitation, setting limits on resource exploration and refugee interdiction, since Morocco's 2002 rejection of Spain's unilateral designation of a median line from the Canary Islands; Morocco serves as one of the primary launching areas of illegal migration into Spain from North Africa; Algeria's border with Morocco remains an irritant to bilateral relations, each nation accusing the other of harboring militants and arms smuggling; the National Liberation Front's assertions of a claim to Chirac Pastures in southeastern Morocco is a dormant dispute |
| Mozambique | none |
| Namibia | concerns from international experts and local populations over the Okavango Delta ecology in Botswana and human displacement scuttled Namibian plans to construct a hydroelectric dam on Popa Falls along the Angola-Namibia border; managed dispute with South Africa over the location of the boundary in the Orange River; Namibia has supported, and in 2004 Zimbabwe dropped objections to, plans between Botswana and Zambia to build a bridge over the Zambezi River, thereby de facto recognizing a short, but not clearly delimited, Botswana-Zambia boundary in the river |
| Nauru | none |
| Navassa Island | claimed by Haiti, source of subsistence fishing |
| Nepal | joint border commission continues to work on contested sections of boundary with India, including the 400 square kilometer dispute over the source of the Kalapani River; India has instituted a stricter border regime to restrict transit of Maoist insurgents and illegal cross-border activities; approximately 106,000 Bhutanese Lhotshampas (Hindus) have been confined in refugee camps in southeastern Nepal since 1990 |
| Netherlands | none |
| New Caledonia | Matthew and Hunter Islands east of New Caledonia claimed by France and Vanuatu |
| New Zealand | asserts a territorial claim in Antarctica (Ross Dependency) |
| Nicaragua | the 1992 ICJ ruling for El Salvador and Honduras advised a tripartite resolution to establish a maritime boundary in the Gulf of Fonseca, which considers Honduran access to the Pacific; legal dispute over navigational rights of San Juan River on border with Costa Rica |
| Niger | Libya claims about 25,000 sq km in a currently dormant dispute in the Tommo region; location of Benin-Niger-Nigeria tripoint is unresolved; only Nigeria and Cameroon have heeded the Lake Chad Commission's admonition to ratify the delimitation treaty that also includes the Chad-Niger and Niger-Nigeria boundaries; the dispute with Burkina Faso was referred to the ICJ in 2010 |
| Nigeria | Joint Border Commission with Cameroon reviewed 2002 ICJ ruling on the entire boundary and bilaterally resolved differences, including June 2006 Greentree Agreement that immediately cedes sovereignty of the Bakassi Peninsula to Cameroon with a phase-out of Nigerian control within two years while resolving patriation issues; the ICJ ruled on an equidistance settlement of Cameroon-Equatorial Guinea-Nigeria maritime boundary in the Gulf of Guinea, but imprecisely defined coordinates in the ICJ decision and a sovereignty dispute between Equatorial Guinea and Cameroon over an island at the mouth of the Ntem River all contribute to the delay in implementation; only Nigeria and Cameroon have heeded the Lake Chad Commission's admonition to ratify the delimitation treaty which also includes the Chad-Niger and Niger-Nigeria boundaries; location of Benin-Niger-Nigeria tripoint is unresolved |
| Niue | none |
| Norfolk Island | none |
| Northern Mariana Islands | none |
| Norway | Norway asserts a territorial claim in Antarctica (Queen Maud Land and its continental shelf); Denmark (Greenland) and Norway have made submissions to the Commission on the Limits of the Continental shelf (CLCS) and Russia is collecting additional data to augment its 2001 CLCS submission; Norway and Russia signed a comprehensive maritime boundary agreement in 2010 |
| Oman | boundary agreement reportedly signed and ratified with UAE in 2003 for entire border, including Oman's Musandam Peninsula and Al Madhah exclave, but details of the alignment have not been made public |
| Pacific Ocean | some maritime disputes (see littoral states) |
| Pakistan | various talks and confidence-building measures cautiously have begun to defuse tensions over Kashmir, particularly since the October 2005 earthquake in the region; Kashmir nevertheless remains the site of the world's largest and most militarized territorial dispute with portions under the de facto administration of China (Aksai Chin), India (Jammu and Kashmir), and Pakistan (Azad Kashmir and Northern Areas); UN Military Observer Group in India and Pakistan has maintained a small group of peacekeepers since 1949; India does not recognize Pakistan's ceding historic Kashmir lands to China in 1964; India and Pakistan have maintained their 2004 cease-fire in Kashmir and initiated discussions on defusing the armed standoff in the Siachen glacier region; Pakistan protests India's fencing the highly militarized Line of Control and construction of the Baglihar Dam on the Chenab River in Jammu and Kashmir, which is part of the larger dispute on water sharing of the Indus River and its tributaries; to defuse tensions and prepare for discussions on a maritime boundary, India and Pakistan seek technical resolution of the disputed boundary in Sir Creek estuary at the mouth of the Rann of Kutch in the Arabian Sea; Pakistani maps continue to show the Junagadh claim in India's Gujarat State; by 2005, Pakistan, with UN assistance, repatriated 2.3 million Afghan refugees leaving slightly more than a million, many of whom remain at their own choosing; Pakistan has sent troops across and built fences along some remote tribal areas of its treaty-defined Durand Line border with Afghanistan, which serve as bases for foreign terrorists and other illegal activities; Afghan, Coalition, and Pakistan military meet periodically to clarify the alignment of the boundary on the ground and on maps |
| Palau | maritime delineation negotiations continue with Philippines, Indonesia |
| Palmyra Atoll | none |
| Panama | organized illegal narcotics operations in Colombia operate within the remote border region with Panama |
| Papua New Guinea | relies on assistance from Australia to keep out illegal cross-border activities from primarily Indonesia, including goods smuggling, illegal narcotics trafficking, and squatters and secessionists |
| Paracel Islands | occupied by China, also claimed by Taiwan and Vietnam |
| Paraguay | unruly region at convergence of Argentina-Brazil-Paraguay borders is locus of money laundering, smuggling, arms and illegal narcotics trafficking, and fundraising for extremist organizations |
| Peru | Chile and Ecuador rejected Peru's November 2005 unilateral legislation to shift the axis of their joint treaty-defined maritime boundaries along the parallels of latitude to equidistance lines which favor Peru; organized illegal narcotics operations in Colombia have penetrated Peru's shared border; Peru rejects Bolivia's claim to restore maritime access through a sovereign corridor through Chile along the Peruvian border |
| Philippines | Philippines claims sovereignty over Scarborough Reef (also claimed by China together with Taiwan) and over certain of the Spratly Islands, known locally as the Kalayaan (Freedom) Islands, also claimed by China, Malaysia, Taiwan, and Vietnam; the 2002 "Declaration on the Conduct of Parties in the South China Sea," has eased tensions in the Spratly Islands but falls short of a legally binding "code of conduct" desired by several of the disputants; in March 2005, the national oil companies of China, the Philippines, and Vietnam signed a joint accord to conduct marine seismic activities in the Spratly Islands; Philippines retains a dormant claim to Malaysia's Sabah State in northern Borneo based on the Sultanate of Sulu's granting the Philippines Government power of attorney to pursue a sovereignty claim on his behalf; maritime delimitation negotiations continue with Palau |
| Pitcairn Islands | none |
| Poland | as a member state that forms part of the EU's external border, Poland has implemented the strict Schengen border rules to restrict illegal immigration and trade along its eastern borders with Belarus and Ukraine |
| Portugal | Portugal does not recognize Spanish sovereignty over the territory of Olivenza based on a difference of interpretation of the 1815 Congress of Vienna and the 1801 Treaty of Badajoz |
| Puerto Rico | increasing numbers of illegal migrants from the Dominican Republic cross the Mona Passage to Puerto Rico each year looking for work |
| Qatar | none |
| Romania | the ICJ ruled largely in favor of Romania in its dispute submitted in 2004 over Ukrainian-administered Zmiyinyy/Serpilor (Snake) Island and Black Sea maritime boundary delimitation; Romania opposes Ukraine's reopening of a navigation canal from the Danube border through Ukraine to the Black Sea |
| Russia | Russia remains concerned about the smuggling of poppy derivatives from Afghanistan through Central Asian countries; China and Russia have demarcated the once disputed islands at the Amur and Ussuri confluence and in the Argun River in accordance with the 2004 Agreement, ending their centuries-long border disputes; the sovereignty dispute over the islands of Etorofu, Kunashiri, Shikotan, and the Habomai group, known in Japan as the "Northern Territories" and in Russia as the "Southern Kurils," occupied by the Soviet Union in 1945, now administered by Russia, and claimed by Japan, remains the primary sticking point to signing a peace treaty formally ending World War II hostilities; Russia's military support and subsequent recognition of Abkhazia and South Ossetia independence in 2008 continue to sour relations with Georgia; Azerbaijan, Kazakhstan, and Russia ratified Caspian seabed delimitation treaties based on equidistance, while Iran continues to insist on a one-fifth slice of the sea; Norway and Russia signed a comprehensive maritime boundary agreement in 2010; various groups in Finland advocate restoration of Karelia (Kareliya) and other areas ceded to the Soviet Union following World War II but the Finnish Government asserts no territorial demands; Russia and Estonia signed a technical border agreement in May 2005, but Russia recalled its signature in June 2005 after the Estonian parliament added to its domestic ratification act a historical preamble referencing the Soviet occupation and Estonia's pre-war borders under the 1920 Treaty of Tartu; Russia contends that the preamble allows Estonia to make territorial claims on Russia in the future, while Estonian officials deny that the preamble has any legal impact on the treaty text; Russia demands better treatment of the Russian-speaking population in Estonia and Latvia; Lithuania and Russia committed to demarcating their boundary in 2006 in accordance with the land and maritime treaty ratified by Russia in May 2003 and by Lithuania in 1999; Lithuania operates a simplified transit regime for Russian nationals traveling from the Kaliningrad coastal exclave into Russia, while still conforming, as an EU member state with an EU external border, where strict Schengen border rules apply; preparations for the demarcation delimitation of land boundary with Ukraine have commenced; the dispute over the boundary between Russia and Ukraine through the Kerch Strait and Sea of Azov remains unresolved despite a December 2003 framework agreement and on-going expert-level discussions; Kazakhstan and Russia boundary delimitation was ratified on November 2005 and field demarcation should commence in 2007; Russian Duma has not yet ratified 1990 Bering Sea Maritime Boundary Agreement with the US; Denmark (Greenland) and Norway have made submissions to the Commission on the Limits of the Continental shelf (CLCS) and Russia is collecting additional data to augment its 2001 CLCS submission |
| Rwanda | Burundi and Rwanda dispute two sq km (0.8 sq mi) of Sabanerwa, a farmed area in the Rukurazi Valley where the Akanyaru/Kanyaru River shifted its course southward after heavy rains in 1965; fighting among ethnic groups - loosely associated political rebels, armed gangs, and various government forces in Great Lakes region transcending the boundaries of Burundi, Democratic Republic of the Congo (DROC), Rwanda, and Uganda - abated substantially from a decade ago due largely to UN peacekeeping, international mediation, and efforts by local governments to create civil societies; nonetheless, 57,000 Rwandan refugees still reside in 21 African states, including Zambia, Gabon, and 20,000 who fled to Burundi in 2005 and 2006 to escape drought and recriminations from traditional courts investigating the 1994 massacres; the 2005 DROC and Rwanda border verification mechanism to stem rebel actions on both sides of the border remains in place |
| Saint Helena, Ascension, and Tristan da Cunha | none |
| Saint Kitts and Nevis | joins other Caribbean states to counter Venezuela's claim that Aves Island sustains human habitation, a criterion under United Nations Convention on the Law of the Sea, which permits Venezuela to extend its Economic Exclusion Zone/continental shelf over a large portion of the eastern Caribbean Sea |
| Saint Lucia | joins other Caribbean states to counter Venezuela's claim that Aves Island sustains human habitation, a criterion under United Nations Convention on the Law of the Sea, which permits Venezuela to extend its Economic Exclusion Zone/continental shelf over a large portion of the eastern Caribbean Sea |
| Saint Pierre and Miquelon | none |
| Saint Vincent and the Grenadines | joins other Caribbean states to counter Venezuela's claim that Aves Island sustains human habitation, a criterion under United Nations Convention on the Law of the Sea, which permits Venezuela to extend its Economic Exclusion Zone/continental shelf over a large portion of the eastern Caribbean Sea |
| Samoa | none |
| San Marino | none |
| Sao Tome and Principe | none |
| Saudi Arabia | Saudi Arabia has reinforced its concrete-filled security barrier along sections of the now fully demarcated border with Yemen to stem illegal cross-border activities; Kuwait and Saudi Arabia continue discussions on a maritime boundary with Iran; Saudi Arabia claims Egyptian-administered islands of Tiran and Sanafir |
| Senegal | The Gambia and Guinea-Bissau attempt to stem separatist violence, cross border raids, and arms smuggling into their countries from Senegal's Casamance region, and in 2006, respectively accepted 6,000 and 10,000 Casamance residents fleeing the conflict; 2,500 Guinea-Bissau residents fled into Senegal in 2006 to escape armed confrontations along the border |
| Serbia | Serbia with several other states protest the U.S. and other states' recognition of Kosovo's declaration of its status as a sovereign and independent state in February 2008; ethnic Serbian municipalities along Kosovo's northern border challenge final status of Kosovo-Serbia boundary; several thousand NATO-led Kosovo Force peacekeepers under United Nations Interim Administration Mission in Kosovo authority continue to keep the peace within Kosovo between the ethnic Albanian majority and the Serb minority in Kosovo; Serbia delimited about half of the boundary with Bosnia and Herzegovina, but sections along the Drina River remain in dispute |
| Seychelles | Mauritius and Seychelles claim the Chagos Islands (UK-administered British Indian Ocean Territory) |
| Sierra Leone | as domestic fighting among disparate ethnic groups, rebel groups, warlords, and youth gangs in Cote d'Ivoire, Guinea, Liberia, and Sierra Leone gradually abates, the number of refugees in border areas has begun to slowly dwindle; Sierra Leone considers excessive Guinea's definition of the flood plain limits to define the left bank boundary of the Makona and Moa rivers and protests Guinea's continued occupation of these lands including the hamlet of Yenga occupied since 1998 |
| Singapore | disputes persist with Malaysia over deliveries of fresh water to Singapore, Singapore's extensive land reclamation works, bridge construction, and maritime boundaries in the Johor and Singapore Straits; in 2008, ICJ awarded sovereignty of Pedra Branca (Pulau Batu Puteh/Horsburgh Island) to Singapore, and Middle Rocks to Malaysia, but did not rule on maritime regimes, boundaries, or disposition of South Ledge; Indonesia and Singapore continue to work on finalization of their 1973 maritime boundary agreement by defining unresolved areas north of Indonesia's Batam Island; piracy remains a problem in the Malacca Strait |
| Slovakia | bilateral government, legal, technical and economic working group negotiations continued in 2006 between Slovakia and Hungary over Hungary's completion of its portion of the Gabcikovo-Nagymaros hydroelectric dam project along the Danube; as a member state that forms part of the EU's external border, Slovakia has implemented the strict Schengen border rules |
| Slovenia | the Croatia-Slovenia land and maritime boundary agreement, which would have ceded most of Piran Bay and maritime access to Slovenia and several villages to Croatia, remains unratified and in dispute; Slovenia also protests Croatia's 2003 claim to an exclusive economic zone in the Adriatic; as a member state that forms part of the EU's external border, Slovenia has implemented the strict Schengen border rules to curb illegal migration and commerce through southeastern Europe while encouraging close cross-border ties with Croatia |
| Solomon Islands | since 2003, Regional Assistance Mission to Solomon Islands, consisting of police, military, and civilian advisors drawn from 15 countries, has assisted in reestablishing and maintaining civil and political order while reinforcing regional stability and security |
| Somalia | Ethiopian forces invaded southern Somalia and routed Islamist Courts from Mogadishu in January 2007; "Somaliland" secessionists provide port facilities in Berbera to landlocked Ethiopia and have established commercial ties with other regional states; "Puntland" and "Somaliland" "governments" seek international support in their secessionist aspirations and overlapping border claims; the undemarcated former British administrative line has little meaning as a political separation to rival clans within Ethiopia's Ogaden and southern Somalia's Oromo region; Kenya works hard to prevent the clan and militia fighting in Somalia from spreading south across the border, which has long been open to nomadic pastoralists |
| South Africa | South Africa has placed military along the border to apprehend the thousands of Zimbabweans fleeing economic dysfunction and political persecution; as of January 2007, South Africa also supports large numbers of refugees and asylum seekers from the Democratic Republic of the Congo (33,000), Somalia (20,000), Burundi (6,500), and other states in Africa (26,000); managed dispute with Namibia over the location of the boundary in the Orange River; in 2006, Swazi king advocates resort to ICJ to claim parts of Mpumalanga and KwaZulu-Natal from South Africa |
| South Georgia and South Sandwich Islands | Argentina, which claims the islands in its constitution and briefly occupied them by force in 1982, agreed in 1995 to no longer seek settlement by force |
| South Sudan | South Sudan-Sudan boundary represents 1 January 1956 alignment, final alignment pending negotiations and demarcation; final sovereignty status of Abyei Area pending negotiations between South Sudan and Sudan; periodic violent skirmishes with South Sudanese residents over water and grazing rights persist among related pastoral populations along the border with the Central African Republic; the boundary that separates Kenya and South Sudan's sovereignty is unclear in the "Ilemi Triangle," which Kenya has administered since colonial times |
| Southern Ocean | Antarctic Treaty defers claims (see Antarctica entry), but Argentina, Australia, Chile, France, NZ, Norway, and UK assert claims (some overlapping), including the continental shelf in the Southern Ocean; several states have expressed an interest in extending those continental shelf claims under the United Nations Convention on the Law of the Sea to include undersea ridges; the US and most other states do not recognize the land or maritime claims of other states and have made no claims themselves (the US and Russia have reserved the right to do so); no formal claims exist in the waters in the sector between 90 degrees west and 150 degrees west |
| Spain | in 2002, Gibraltar residents voted overwhelmingly by referendum to reject any "shared sovereignty" arrangement; the government of Gibraltar insists on equal participation in talks between the UK and Spain; Spain disapproves of UK plans to grant Gibraltar greater autonomy; Morocco protests Spain's control over the coastal enclaves of Ceuta, Melilla, and the islands of Penon de Velez de la Gomera, Penon de Alhucemas, and Islas Chafarinas, and surrounding waters; both countries claim Isla Perejil (Leila Island); Morocco serves as the primary launching site of illegal migration into Spain from North Africa; Portugal does not recognize Spanish sovereignty over the territory of Olivenza based on a difference of interpretation of the 1815 Congress of Vienna and the 1801 Treaty of Badajoz |
| Spratly Islands | all of the Spratly Islands are claimed by China (including Taiwan) and Vietnam; parts of them are claimed by Brunei, Malaysia and the Philippines; despite no public territorial claim to Louisa Reef, Brunei implicitly lays claim by including it within the natural prolongation of its continental shelf and basis for a seabed median with Vietnam; claimants in November 2002 signed the "Declaration on the Conduct of Parties in the South China Sea," which has eased tensions but falls short of a legally binding "code of conduct"; in March 2005, the national oil companies of China, the Philippines, and Vietnam signed a joint accord to conduct marine seismic activities in the Spratly Islands |
| Sri Lanka | none |
| Sudan | the effects of Sudan's almost constant ethnic and rebel militia fighting since the mid-20th century have penetrated all of the neighboring states; Chad wishes to be a helpful mediator in resolving the Darfur conflict, and in 2010 established a joint border monitoring force with Sudan, which has helped to reduce cross-border banditry and violence; as of 2006, Chad, Ethiopia, Kenya, Central African Republic, Democratic Republic of the Congo, and Uganda provided shelter for over a half million Sudanese refugees, which include 240,000 Darfur residents driven from their homes by Janjawid armed militia and Sudanese military forces; as of January 2011, Sudan, in turn, hosted about 138,700 Eritreans, 43,000 Chadians, and smaller numbers of Ethiopians; Sudan accuses Eritrea of supporting Sudanese rebel groups; efforts to demarcate the porous boundary with Ethiopia proceed slowly due to civil and ethnic fighting in eastern Sudan; Sudan claims but Egypt de facto administers security and economic development of Halaib region north of the 22nd parallel boundary; periodic violent skirmishes with Sudanese residents over water and grazing rights persist among related pastoral populations along the border with the Central African Republic; South Sudan-Sudan boundary represents 1 January 1956 alignment, final alignment pending negotiations and demarcation; final sovereignty status of Abyei Area pending negotiations between South Sudan and Sudan |
| Suriname | area claimed by French Guiana between Riviere Litani and Riviere Marouini (both headwaters of the Lawa); Suriname claims a triangle of land between the New and Kutari/Koetari rivers in a historic dispute over the headwaters of the Courantyne; Guyana seeks United Nations Convention on the Law of the Sea arbitration to resolve the longstanding dispute with Suriname over the axis of the territorial sea boundary in potentially oil-rich waters |
| Svalbard | despite recent discussions, Russia and Norway dispute their maritime limits in the Barents Sea and Russia's fishing rights beyond Svalbard's territorial limits within the Svalbard Treaty zone |
| Swaziland | in 2006, Swazi king advocated resorting to ICJ to claim parts of Mpumalanga and KwaZulu-Natal from South Africa |
| Sweden | none |
| Switzerland | none |
| Syria | Golan Heights is Israeli-occupied with the almost 1,000-strong UN Disengagement Observer Force patrolling a buffer zone since 1964; lacking a treaty or other documentation describing the boundary, portions of the Lebanon-Syria boundary are unclear with several sections in dispute; since 2000, Lebanon has claimed Shab'a Farms in the Golan Heights; 2004 Agreement and pending demarcation settles border dispute with Jordan |
| Taiwan | involved in complex dispute with Brunei, China, Malaysia, the Philippines, and Vietnam over the Spratly Islands, and with China and the Philippines over Scarborough Reef; the 2002 "Declaration on the Conduct of Parties in the South China Sea" has eased tensions but falls short of a legally binding "code of conduct" desired by several of the disputants; Paracel Islands are occupied by China, but claimed by Taiwan and Vietnam; in 2003, China and Taiwan became more vocal in rejecting both Japan's claims to the uninhabited islands of the Senkaku-shoto (Diaoyu Tai) and Japan's unilaterally declared exclusive economic zone in the East China Sea where all parties engage in hydrocarbon prospecting |
| Tajikistan | in 2006, China and Tajikistan pledged to commence demarcation of the revised boundary agreed to in the delimitation of 2002; talks continue with Uzbekistan to delimit border and remove minefields; disputes in Isfara Valley delay delimitation with Kyrgyzstan |
| Tanzania | Tanzania still hosts more than a half million refugees, more than any other African country, mainly from Burundi and the Democratic Republic of the Congo, despite the international community's efforts at repatriation; disputes with Malawi over the boundary in Lake Nyasa (Lake Malawi) and the meandering Songwe River remain dormant |
| Thailand | separatist violence in Thailand's predominantly Muslim southern provinces prompt border closures and controls with Malaysia to stem terrorist activities; Southeast Asian states have enhanced border surveillance to check the spread of avian flu; talks continue on completion of demarcation with Laos but disputes remain over several islands in the Mekong River; despite continuing border committee talks, Thailand must deal with Karen and other ethnic rebels, refugees, and illegal cross-border activities, and as of 2006, over 116,000 Karen and other refugees and asylum seekers from Burma; Cambodia and Thailand dispute sections of boundary; in 2011 Thailand and Cambodia resorted to arms in the dispute over the location of the boundary on the precipice surmounted by Preah Vihear temple ruins, awarded to Cambodia by ICJ decision in 1962 and part of a planned UN World Heritage site; Thailand is studying the feasibility of jointly constructing the Hatgyi Dam on the Salween river near the border with Burma; in 2004, international environmentalist pressure prompted China to halt construction of 13 dams on the Salween River that flows through China, Burma, and Thailand; 140,000 mostly Karen refugees fleeing civil strife, political upheaval and economic stagnation in Burma live in remote camps in Thailand near the border |
| Timor-Leste | three stretches of land borders with Timor-Leste have yet to be delimited, two of which are in the Oecussi exclave area, and no maritime or Economic Exclusion Zone boundaries have been established between the countries; maritime boundaries with Indonesia remain unresolved; many refugees who left Timor-Leste in 2003 still reside in Indonesia and refuse repatriation; in 2007, Australia and Timor-Leste signed a 50-year development zone and revenue sharing agreement in lieu of a maritime boundary |
| Togo | in 2001, Benin claimed Togo moved boundary monuments - joint commission continues to resurvey the boundary; in 2006, 14,000 Togolese refugees remain in Benin and Ghana out of the 40,000 who fled there in 2005; talks continue between Benin and Togo on funding the Adjrala hydroelectric dam on the Mona River |
| Tokelau | Tokelau included American Samoa's Swains Island (Olohega) in its 2006 draft independence constitution |
| Tonga | none |
| Trinidad and Tobago | Barbados and Trinidad and Tobago abide by the April 2006 Permanent Court of Arbitration decision delimiting a maritime boundary and limiting catches of flying fish in Trinidad and Tobago's exclusive economic zone; in 2005, Barbados and Trinidad and Tobago agreed to compulsory international arbitration under United Nations Convention on the Law of the Sea challenging whether the northern limit of Trinidad and Tobago's and Venezuela's maritime boundary extends into Barbadian waters; Guyana has also expressed its intention to include itself in the arbitration as the Trinidad and Tobago-Venezuela maritime boundary may extend into its waters as well |
| Tunisia | none |
| Turkey | complex maritime, air, and territorial disputes with Greece in the Aegean Sea; status of north Cyprus question remains; Syria and Iraq protest Turkish hydrological projects to control upper Euphrates waters; Turkey has expressed concern over the status of Kurds in Iraq; in 2009, Swiss mediators facilitated an accord reestablishing diplomatic ties between Armenia and Turkey, but neither side has ratified the agreement and the rapprochement effort has faltered; Turkish authorities have complained that blasting from quarries in Armenia might be damaging the medieval ruins of Ani, on the other side of the Arpacay valley; |
| Turkmenistan | cotton monoculture in Uzbekistan and Turkmenistan creates water-sharing difficulties for Amu Darya river states; field demarcation of the boundaries with Kazakhstan commenced in 2005, but Caspian seabed delimitation remains stalled with Azerbaijan, Iran, and Kazakhstan due to Turkmenistan's indecision over how to allocate the sea's waters and seabed; bilateral talks continue with Azerbaijan on dividing the seabed and contested oilfields in the middle of the Caspian |
| Turks and Caicos Islands | have received Haitians fleeing economic and civil disorder |
| Tuvalu | none |
| Uganda | Uganda is subject to armed fighting among hostile ethnic groups, rebels, armed gangs, militias, and various government forces that extend across its borders; Uganda hosts 209,860 Sudanese, 27,560 Congolese, and 19,710 Rwandan refugees, while Ugandan refugees as well as members of the Lord's Resistance Army (LRA) seek shelter in southern Sudan and the Democratic Republic of the Congo's Garamba National Park; LRA forces have also attacked Kenyan villages across the border |
| Ukraine | 1997 boundary delimitation treaty with Belarus remains unratified due to unresolved financial claims, stalling demarcation and reducing border security; delimitation of land boundary with Russia is complete with preparations for demarcation underway; the dispute over the boundary between Russia and Ukraine through the Kerch Strait and Sea of Azov remains unresolved despite a December 2003 framework agreement and ongoing expert-level discussions; Moldova and Ukraine operate joint customs posts to monitor transit of people and commodities through Moldova's break-away Transnistria Region, which remains under Organization for Security and Cooperation in Europe supervision; the ICJ ruled largely in favor of Romania its dispute submitted in 2004 over Ukrainian-administered Zmiyinyy/Serpilor (Snake) Island and Black Sea maritime boundary delimitation; Romania opposes Ukraine's reopening of a navigation canal from the Danube border through Ukraine to the Black Sea |
| United Arab Emirates | boundary agreement was signed and ratified with Oman in 2003 for entire border, including Oman's Musandam Peninsula and Al Madhah enclaves, but contents of the agreement and detailed maps showing the alignment have not been published; Iran and UAE dispute Tunb Islands and Abu Musa Island, which Iran occupies |
| United Kingdom | in 2002, Gibraltar residents voted overwhelmingly by referendum to reject any "shared sovereignty" arrangement between the UK and Spain; the Government of Gibraltar insisted on equal participation in talks between the two countries; Spain disapproved of UK plans to grant Gibraltar greater autonomy; Mauritius and Seychelles claim the Chagos Archipelago (British Indian Ocean Territory); in 2001, the former inhabitants of the archipelago, evicted 1967 - 1973, were granted U.K. citizenship and the right of return, followed by Orders in Council in 2004 that banned rehabitation, a High Court ruling reversed the ban, a Court of Appeal refusal to hear the case, and a Law Lords' decision in 2008 denied the right of return; in addition, the United Kingdom created the world's largest marine protection area around the Chagos islands prohibiting the extraction of any natural resources therein; UK rejects sovereignty talks requested by Argentina, which still claims the Falkland Islands (Islas Malvinas) and South Georgia and the South Sandwich Islands; territorial claim in Antarctica (British Antarctic Territory) overlaps Argentine claim and partially overlaps Chilean claim; Iceland, the UK, and Ireland dispute Denmark's claim that the Faroe Islands' continental shelf extends beyond 200 nm |
| United States | the US has intensified domestic security measures and is collaborating closely with its neighbors, Canada and Mexico, to monitor and control legal and illegal personnel, transport, and commodities across the international borders; abundant rainfall in recent years along much of the Mexico-US border region has ameliorated periodically strained water-sharing arrangements; 1990 Maritime Boundary Agreement in the Bering Sea still awaits Russian Duma ratification; Canada and the United States dispute how to divide the Beaufort Sea and the status of the Northwest Passage but continue to work cooperatively to survey the Arctic continental shelf; The Bahamas and US have not been able to agree on a maritime boundary; US Naval Base at Guantanamo Bay is leased from Cuba and only mutual agreement or US abandonment of the area can terminate the lease; Haiti claims US-administered Navassa Island; US has made no territorial claim in Antarctica (but has reserved the right to do so) and does not recognize the claims of any other states; Marshall Islands claims Wake Island; Tokelau included American Samoa's Swains Island among the islands listed in its 2006 draft constitution |
| United States Pacific Island Wildlife Refuges | none |
| Uruguay | in 2010, the ICJ ruled in favor of Uruguay's operation of two paper mills on the Uruguay River, which forms the border with Argentina; the two countries formed a joint pollution monitoring regime; uncontested boundary dispute between Brazil and Uruguay over Braziliera/Brasiliera Island in the Quarai/Cuareim River leaves the tripoint with Argentina in question; smuggling of firearms and narcotics continues to be an issue along the Uruguay-Brazil border |
| Uzbekistan | prolonged drought and cotton monoculture in Uzbekistan and Turkmenistan created water-sharing difficulties for Amu Darya river states; field demarcation of the boundaries with Kazakhstan commenced in 2004; border delimitation of 130 km of border with Kyrgyzstan is hampered by serious disputes around enclaves and other areas |
| Vanuatu | Matthew and Hunter Islands east of New Caledonia claimed by Vanuatu and France |
| Venezuela | claims all of the area west of the Essequibo River in Guyana, preventing any discussion of a maritime boundary; Guyana has expressed its intention to join Barbados in asserting claims before the United Nations Convention on the Law of the Sea that Trinidad and Tobago's maritime boundary with Venezuela extends into their waters; dispute with Colombia over maritime boundary and Venezuelan administered Los Monjes islands near the Gulf of Venezuela; Colombian organized illegal narcotics and paramilitary activities penetrate Venezuela's shared border region; in 2006, an estimated 139,000 Colombians sought protection in 150 communities along the border in Venezuela; US, France, and the Netherlands recognize Venezuela's granting full effect to Aves Island, thereby claiming a Venezuelan Economic Exclusion Zone/continental shelf extending over a large portion of the eastern Caribbean Sea; Dominica, Saint Kitts and Nevis, Saint Lucia, and Saint Vincent and the Grenadines protest Venezuela's full effect claim |
| Vietnam | southeast Asian states have enhanced border surveillance to check the spread of avian flu; Cambodia and Laos protest Vietnamese squatters and armed encroachments along border; Cambodia accuses Vietnam of a wide variety of illicit cross-border activities; progress on a joint development area with Cambodia is hampered by an unresolved dispute over sovereignty of offshore islands; an estimated 300,000 Vietnamese refugees reside in China; establishment of a maritime boundary with Cambodia is hampered by unresolved dispute over the sovereignty of offshore islands; the decade-long demarcation of the China-Vietnam land boundary was completed in 2009; China occupies the Paracel Islands also claimed by Vietnam and Taiwan; Brunei claims a maritime boundary extending beyond as far as a median with Vietnam, thus asserting an implicit claim to Lousia Reef; the 2002 "Declaration on the Conduct of Parties in the South China Sea" has eased tensions but falls short of a legally binding "code of conduct" desired by several of the disputants; Vietnam continues to expand construction of facilities in the Spratly Islands; in March 2005, the national oil companies of China, the Philippines, and Vietnam signed a joint accord to conduct marine seismic activities in the Spratly Islands; Economic Exclusion Zone negotiations with Indonesia are ongoing, and the two countries in Fall 2011 agreed to work together to reduce illegal fishing along their maritime boundary |
| Virgin Islands | none |
| Wake Island | claimed by Marshall Islands |
| Wallis and Futuna | none |
| West Bank | The current status of the West Bank is subject to the Israeli-Palestinian Interim Agreement - permanent status to be determined through further negotiation; Israel continues construction of a "seam line" separation barrier along parts of the Green Line and within the West Bank; Israel withdrew from four settlements in the northern West Bank in August 2005; since 1948, about 350 peacekeepers from the UN Truce Supervision Organization (UNTSO), headquartered in Jerusalem, monitor ceasefires, supervise armistice agreements, prevent isolated incidents from escalating, and assist other UN personnel in the region |
| Western Sahara | Many neighboring states reject Moroccan administration of Western Sahara; several states have extended diplomatic relations to the "Sahrawi Arab Democratic Republic" represented by the Polisario Front in exile in Algeria, while others recognize Moroccan sovereignty over Western Sahara; most of the approximately 102,000 Sahrawi refugees are sheltered in camps in Tindouf, Algeria |
| World | stretching over 250,000 km, the world's 322 international land boundaries separate 195 independent states and 71 dependencies, areas of special sovereignty, and other miscellaneous entities; ethnicity, culture, race, religion, and language have divided states into separate political entities as much as history, physical terrain, political fiat, or conquest, resulting in sometimes arbitrary and imposed boundaries; most maritime states have claimed limits that include territorial seas and exclusive economic zones; overlapping limits due to adjacent or opposite coasts create the potential for 430 bilateral maritime boundaries of which 209 have agreements that include contiguous and non-contiguous segments; boundary, borderland/resource, and territorial disputes vary in intensity from managed or dormant to violent or militarized; undemarcated, indefinite, porous, and unmanaged boundaries tend to encourage illegal cross-border activities, uncontrolled migration, and confrontation; territorial disputes may evolve from historical and/or cultural claims, or they may be brought on by resource competition; ethnic and cultural clashes continue to be responsible for much of the territorial fragmentation and internal displacement of the estimated 6.6 million people and cross-border displacements of 8.6 million refugees around the world as of early 2006; just over one million refugees were repatriated in the same period; other sources of contention include access to water and mineral (especially hydrocarbon) resources, fisheries, and arable land; armed conflict prevails not so much between the uniformed armed forces of independent states as between stateless armed entities that detract from the sustenance and welfare of local populations, leaving the community of nations to cope with resultant refugees, hunger, disease, impoverishment, and environmental degradation |
| Yemen | Saudi Arabia has reinforced its concrete-filled security barrier along sections of the fully demarcated border with Yemen to stem illegal cross-border activities |
| Zambia | in 2004, Zimbabwe dropped objections to plans between Botswana and Zambia to build a bridge over the Zambezi River, thereby de facto recognizing a short, but not clearly delimited, Botswana-Zambia boundary in the river |
| Zimbabwe | Botswana built electric fences and South Africa has placed military along the border to stem the flow of thousands of Zimbabweans fleeing to find work and escape political persecution; Namibia has supported, and in 2004 Zimbabwe dropped objections to, plans between Botswana and Zambia to build a bridge over the Zambezi River, thereby de facto recognizing a short, but not clearly delimited, Botswana-Zambia boundary in the river |