| Country | Disputes - international |
| Chile | Chile rebuffs Bolivia's reactivated claim to restore the Atacama corridor, ceded to Chile in 1884, offering instead unrestricted but not sovereign maritime access through Chile to Bolivian gas and other commodities; Chile rejects Peru's unilateral legislation to change its latitudinal maritime boundary with Chile to an equidistance line with a southwestern axis favoring Peru; 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 | based on principles drafted in 2005, China and India continue discussions to resolve all aspects of their extensive boundary and territorial disputes together with a security and foreign policy dialogue to consolidate discussions related to the boundary, regional nuclear proliferation, and other matters; recent talks and confidence-building measures have begun to defuse tensions over Kashmir, 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 does not recognize Pakistan's ceding historic Kashmir lands to China in 1964; lacking any treaty describing the boundary, Bhutan and China continue negotiations to establish a boundary alignment to resolve substantial cartographic discrepancies, the largest of which lies in Bhutan's northwest; China asserts sovereignty over the Spratly Islands together with Malaysia, Philippines, Taiwan, Vietnam, and possibly Brunei; the 2002 "Declaration on the Conduct of Parties in the South China Sea" eased tensions in the Spratly's but is not the legally binding "code of conduct" sought by some parties; Vietnam and China continue to expand construction of facilities in the Spratly's 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 prospecting; certain islands in the Yalu and Tumen rivers are in dispute with North Korea; China seeks to stem illegal migration of North Koreans; 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; in 2006, China and Tajikistan pledged to commence demarcation of the revised boundary agreed to in the delimitation of 2002; demarcation of the China-Vietnam land boundary proceeds slowly and although the maritime boundary delimitation and fisheries agreements were ratified in June 2004, implementation remains stalled; in 2004, international environmentalist and political pressure from Burma and Thailand prompted China to halt construction of 13 dams on the Salween River |
| Christmas Island | none |
| Clipperton Island | none |
| Cocos (Keeling) Islands | none |
| Colombia | memorials and countermemorials were filed by the parties in Nicaragua's 1999 and 2001 proceedings against Honduras and Colombia at the ICJ over the maritime boundary and territorial claims in the western Caribbean Sea - final public hearings are scheduled for 2007; 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 of its neighbors' borders and have caused over 300,000 persons to flee the country, mostly into neighboring states |
| Comoros | claims French-administered Mayotte |
| Congo, Democratic Republic of the | heads of the Great Lakes states and UN pledge to abate tribal, rebel, and militia fighting in the northeastern region of the Democratic Republic of the Congo (DROC); in 2006, the UN Organization Mission in the Democratic Republic of the Congo (MONUC) maintained over 18,000 uniformed peacekeepers in the region, first deployed in 1999; despite significant repatriation efforts by governments and international organizations, in 2006, Angolans, Rwandans, Sudanese, and residents of other neighboring states reside as refugees in the DROC; members of Uganda's Lords Resistance Army forces take refuge in DROC's Garamba National Park; 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 |
| Congo, Republic of the | Congo hosts about 63,000 refugees from neighboring states, primarily from the Pool border area of the Democratic Republic of the Congo; the location of the boundary in the broad Congo River with the Democratic Republic of the Congo is indefinite except in the Pool Malebo/Stanley Pool area |
| Cook Islands | none |
| Coral Sea Islands | none |
| Costa Rica | in September 2005, Costa Rica took its case before the ICJ to advocate the navigation, security, and commercial rights of Costa Rican vessels using the RÌo 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 there has displaced hundreds of thousands of Ivorians in and out of the country as well as driven out migrants from neighboring states who worked in Ivorian cocoa plantations; Ivorian rebels reportedly hide along the borders of neighboring states |
| Croatia | dispute remains with Bosnia and Herzegovina over several small disputed 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 un-ratified and in dispute; Slovenia also protests Croatia's 2003 claim to an exclusive economic zone in the Adriatic; as a European Union peripheral state, neighboring Slovenia must conform to the strict Schengen border rules to curb illegal migration and commerce through southeastern Europe while encouraging close cross-border ties with Croatia |
| Cuba | US Naval Base at Guantanamo Bay is leased to US and only mutual agreement or US abandonment of the area 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 |
| Czech Republic | in 2006, Austrian public protests for the Czech Republic to close the Temelin nuclear power plant resulted in an Austrian parliamentary motion threatening international legal action |
| 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 |
| Dhekelia | void |
| Djibouti | Djibouti maintains economic ties and border accords with "Somaliland" leadership while maintaining some political ties to various factions in Somalia; thousands of Somali refugees await repatriation in UNHCR camps in Djibouti |
| 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 |