Khmer Rouge "Brother Number Two" Nuon Chea, who died Sunday aged 93, was considered the chief ideologue of the murderous Cambodian regime and a key architect of its killing machine.
Once leader Pol Pot's most trusted deputy, he was arrested in September 2007 on charges of war crimes, genocide and crimes against humanity that occurred during the brutal Khmer Rouge reign from 1975 to 1979.
The Extraordinary Chambers in the Courts of Cambodia sentenced him to life in
prison last year after he was found guilty of genocide against the ethnic Vietnamese and Cham Muslim minority groups.