Prosecutors in the genocide trial of a former Khmer Rouge prison chief demanded a 40-year jail sentence Wednesday for a man who they described as snuffing out innocent lives and spreading terror across Cambodia. Kaing Guek Eav commanded the notorious S-21 prison, where those accused of disloyalty to the xenophobic communist regime were held. He oversaw the torture and execution of about 16,000 men, women and children during the Khmer Rouge's 1975-79 rule. Some 1.7 million Cambodians died of torture, execution, disease and starvation during the Khmer Rouge's rule, during which the Maoist ideologues emptied cities and forced virtually the entire population to work on farm collectives. Co-prosecutor William Smith told the court that Kaing...