In Cambodia, the first UN-backed trial of a former Khmer Rouge leader has begun. On trial is Kaing Guek Eav, better known as Duch. He headed a notorious prison camp and is accused of presiding over the murder and torture of at least 15,000 inmates. The trial comes thirty years after the fall of the Khmer Rouge. It marks the first time a leading figure of the Khmer Rouge has gone on trial.