Cambodia Politics and government 1975-1979 (Geographic Name)
Britannica Micro.: v. 2, pp. 757-758 (Lon Nol's government was overthrown by the Khmer Rouge in 1975. In 1976 the republic of Democratic Kampuchea was proclaimed and the Khmer Rouge leader Pol Pot became its premier. Vietnam launched a military invasion of Cambodia in 1979 and established a client Cambodian government composed largely of defectors from the Khmer Rouge.)