ソン・セン
After the Cambodian coup of 1970, and the subsequent establishment of the Khmer Republic under Lon Nol, Sihanouk was to join with his former Communist enemies in forming the GRUNK, a Beijing-based government-in-exile. The Khmer Rouge's forces were soon to be swelled by thousands of new recruits, attracted in part by Sihanouk's name. Son Sen, whilst not a prominent member of the GRUNK, had considerable power thanks to his high position in the government's forces on the ground – CPNLAF, the Cambodian People's National Liberation Armed Forces. Along with Ieng Sary, he was responsible for the North-Eastern Zone, the stronghold of the Party 'Centre'.