1922- . Cambodian politician, king 1941-55, prime minister 1955-70, when his government was overthrown by a military coup led by Lon Nol. With Pol Pot's resistance front, he overthrew Lon Nol 1975 and again became prime minister 1975-76, when he was forced to resign by the Khmer Rouge. Educated in Vietnam and Paris, he was elected king of Cambodia 1941. He abdicated 1955 in favour of his father, founded the Popular Socialist Community, and governed as prime minister 1955-70. After he was deposed in 1970, Sihanouk established a government in exile in Beijing and formed a joint resistance front with Pol Pot. This movement succeeded in overthrowing Lon Nol Apr 1975 and Sihanouk was reappointed head of state, but in Apr 1976 he was forced to resign by the communist Khmer Rouge leadership. Based in North Korea, he became the recognized head of the Democratic Kampuchea government in exile 1982, leading a coalition of three groups opposing the Vietnamese-installed government. International peace conferences aimed at negotiating a settlement repeatedly broke down, fighting intensified, and the Khmer Rouge succeeded in taking some important provincial capitals. In 1990 Sihanouk returned to live in the `liberated zone' of W Cambodia, continuing to insist, with Chinese support, that the Khmer Rouge be part of any coalition governmet.