Hundreds of people have queued up for a place at the long-awaited trial of a former Khmer Rouge leader in Cambodia.The UN-backed tribunal is the first since the fall of Pol Pot’s murderous regime 30 years ago, blamed for the deaths of 1.7 million people whose relatives now want justice: The tribunal is the culmination of a process which began more than ten years ago..when Cambodia asked the UN to set up a genocide inquiry. Kaing Guek Eav – known as Duch – is accused of presiding over the torture and murder of an estimated 15 thousand people. From 1975 to 1979, most were tortured at the Tuol Sleng interrogation centre in Phnom Penh, where the 66-year-old former maths teacher was commander. Others were executed at the notorious “killing fields” on the outskirts of the capital. Duch is said to have co-operated with the authorities and its hoped information from this hearing could help with the trials of five other senior Khmer Rouge leaders.