Kaing Guek Eav, known as Duch (R), who ran the Khmer Rouge's 'S-21' torture and interrogation centre, listens during his trial by a U.N.-backed tribunal at the Extraordinary Chambers in the Courts of Cambodia (ECCC) on the outskirts of Phnom Penh, November 25, 2009. REUTERS/Mark Pitters/ECCC/Handout