On March 29, 2004 in Washington, DC, Indulis Emsis, Prime Minister of Latvia, submitted Accession instruments of the North Atlantic Treaty to U.S. Secretary of State Colin Powell. This marked the completion of legal formalities of Latvia's accession process to NATO and Latvia's full membership in the North Atlantic Alliance. Latvian Foreign Ministry: Security Fact sheets, policy documents, and news about Latvia's membership in NATO. Latvia's Ministry of Defense Official site of defense ministry. Policy documents, news releases, regulatory acts, detailed directory.