… during the rule of the Khmer Rouge from 1975 to 1979.” Dec 12, 1997 The UN General Assembly adopts resolution 52/135 … he offers to hold further negotiations in Phnom Penh. Jan 14, 2000 The Cambodian cabinet amends the draft tribunal law … 29, 2000 US Senator John Kerry leaves Cambodia after a two-day visit which focused mostly on the Khmer Rouge tribunal. …