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In page Ban Ki-moon:

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On the tenth anniversary of Khmer Rouge leader Pol Pot's death, 15 April 2008, Ban Ki-moon appealed for the senior leaders of the regime to be brought to justice. The Extraordinary Chambers in the Courts of Cambodia-tribunal, which was established by both the United Nations and Cambodia and which became operational in 2006[citation needed], is responsible for prosecuting the aforementioned senior leaders.[8]