In this undated photo, a man cleans a skull near a mass grave at the Choeung Ek camp outside Phnom Penh, Cambodia — the best known of the killing fields run by the Khmer Rouge in the middle and late 1970s. Now, Cambodians are skeptical that a U.N.-backed tribunal will be able to deliver justice in the case of four remaining high-level Khmer Rouge officials.
(AP)