| Country | Disputes - international |
| 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 Limiting 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 declaring itself 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 KFOR peacekeepers under UNMIK 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 around 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 will affect water levels |
| Latvia | Russia demands better Latvian treatment of ethnic Russians in Latvia; as of January 2007, ground demarcation of the boundary with Belarus was complete and mapped with final ratification documentation in preparation; 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 (UNIFIL) 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 (UNMIL) 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 (UNOCI) 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 | Libya has claimed more than 32,000 sq km in southeastern Algeria and about 25,000 sq km in the Tommo region of Niger in a currently dormant dispute; various Chadian rebels from the Aozou region reside in southern Libya |
| Liechtenstein | none |