| Country | Disputes - international |
| 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 are 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 DROC 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 DROC village of Pweto |
| Congo, Republic of the | 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 | the ICJ has 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 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 still leaves 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; 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 |
| Dhekelia | void |
| 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 |