CIA activities in Vietnam were operations conducted by the Central Intelligence Agency in Vietnam from the 1950s to the late 1960s, before and during the Vietnam War. After the 1954 Geneva Conference, North Vietnam was controlled by communist forces under Ho Chi Minh's leadership. South Vietnam, with the assistance of the U.S., was anti-communist under Ngo Dinh Diem's leadership. The economic and military aid supplied by the U.S. to South Vietnam continued until the 1974. The CIA participated in both the political and military aspect of the wars in Indochina.[1] The CIA provided suggestions for political platforms, supported candidates, used agency resources to refute electoral fraud charges, manipulated the certification of election results by the South Vietnamese National Assembly, and instituted the Phoenix Program. It worked particularly closely with the ethnic minority Montagnards, Hmong, and Khmer.[2] There are 174 National Intelligence Estimates dealing with Vietnam, issued by the CIA after coordination with the U.S. intelligence community.[3]