Digital National Security Archive Full-text online of previously classified primary documents central to US foreign and military policy since 1945. Comprised of more than 20 topic-specific collections, including Afghanistan, Berlin and Cuban Missile Crises, China, El Salvador, Iran and Iran-Contra, Iraqgate, Japan, Nicaragua, Phillipines, Presidential Directives on National Security, South Africa, Soviet Union, Terrorism, U.S. Espionage and Intelligence, U.S. Military Uses of Space, and U.S. Nuclear History and Non-proliferation Policy. Varies by collection; generally sometime during the Cold War period, 1945 to 1991.