| Country | Disputes - international |
| 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; 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 (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 | 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 |