Khmer Rouge leader Nuon Chea sits at the tribunal in the Court of Cambodia... Phnom Penh

Former Khmer Rouge leader Nuon Chea appears (C) at the tribunal in the Court of Cambodia (ECCC) in Phnom Penh on February 4, 2008. Nuon Chea is to appeal against his detention by Cambodia's genocide tribunal, insisting there is not enough evidence to keep him behind bars pending trial. Up to two million people died of starvation and overwork, or were executed by the Khmer Rouge, which dismantled modern Cambodian society in its effort to forge a radical agrarian utopia.

Former Khmer Rouge leader Nuon Chea sits at the tribunal in the Court of Cambodia (ECCC) in Phnom Penh on February 4, 2008. Nuon Chea is to appeal against his detention by Cambodia's genocide tribunal, insisting there is not enough evidence to keep him behind bars pending trial. Up to two million people died of starvation and overwork, or were executed by the Khmer Rouge, which dismantled modern Cambodian society in its effort to forge a radical agrarian utopia.

A elderly Cambodian woman waits to attend the UN-backed genocide tribunal in Phnom Penh on February 4, 2008. Former Khmer Rouge leader Nuon Chea's first public hearing before Cambodia's genocide tribunal was postponed amid a row over his legal team. Nuon Chea, who was Khmer Rouge supreme leader Pol Pot's closest deputy and the alleged architect of the regime's devastating execution policies during its 1975-1979 rule, was arrested in September and charged with war crimes and crimes against humanity.

Former Khmer Rouge leader Nuon Chea (C) appears at the tribunal in the Court of Cambodia (ECCC) in Phnom Penh February 04 2008. Nuon Chea is to appeal against his detention by Cambodia's genocide tribunal, insisting there is not enough evidence to keep him behind bars pending trial. Up to two million people died of starvation and overwork, or were executed by the Khmer Rouge, which dismantled modern Cambodian society in its effort to forge a radical agrarian utopia.

A tourist takes picture of skulls of Khmer Rouge victims at the Choeung Ek killing fields memorial, 15 kms southwest of Phnom Penh, 03 February 2008. Former Khmer Rouge leader Nuon Chea is to appeal on 04 February against his detention by Cambodia's genocide tribunal, insisting there is not enough evidence to keep him behind bars pending trial. Up to two million people died of starvation and overwork, or were executed by the Khmer Rouge, which dismantled modern Cambodian society in its effort to forge a radical agrarian utopia.