Khmer Rouge Leadership: Vorn Vet (1934-1978); born Pen Thuok; was Deputy Prime Minister for the Economy of Democratic Kampuchea (and effectively Brother No 4 or 5) until his arrest in November 1978 on suspicion of treason. He was interrogated and tortured at Tuol Sleng (S-21) before being murdered there; probably in December 1978.

Between 1970 and 1975 Norodom Sihanouk was nominally head of the Khmer Rouge-dominated Royal Government of National Union of Kampuchea (acronym from the French GRUNK); the opposition to Lon Nol's pro-American Khmer Republic. In 1973 he travelled from Beijing to the Khmer Rouge 'liberated zone' of Cambodia for propaganda purposes. The Khmer Rouge; or Communist Party of Kampuchea; ruled Cambodia from 1975 to 1979; led by Pol Pot; Nuon Chea; Ieng Sary; Son Sen and Khieu Samphan. Pictures From History