A timeline of the Khmer Rouge regime and its aftermath

Miranda Leitsinger, CNN, and Casey Tolan, for CNN

Updated 0323 GMT (1123 HKT) April 17, 2015

Cambodian and international journalists watch a live video feed showing the verdicts in the trial of former Khmer Rouge leader "Brother Number Two," Nuon Chea, and former Khmer Rouge head of state Khieu Samphan, August 7, 2014.
Photos: Cambodia's bloody past
Cambodia's bloody past – Cambodian and international journalists watch a live video feed showing the verdicts in the trial of former Khmer Rouge leader "Brother Number Two," Nuon Chea, and former Khmer Rouge head of state Khieu Samphan, August 7, 2014.
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A Cambodian man Khieu Samphan on a television during the trial at the Extraordinary Chamber in the Courts of Cambodia (ECCC) in Phnom Penh on August 7. He and Nuon Chea were found guilty of crimes against humanity and sentenced to life in prison.
Photos: Cambodia's bloody past
Cambodia's bloody past – A Cambodian man Khieu Samphan on a television during the trial at the Extraordinary Chamber in the Courts of Cambodia (ECCC) in Phnom Penh on August 7. He and Nuon Chea were found guilty of crimes against humanity and sentenced to life in prison.
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Known as Brother Number Two, Nuon Chea was considered Khmer Rouge leader Pol Pot's right hand man. This is an image from court in 2011.<br />
Photos: Cambodia's bloody past
Cambodia's bloody past – Known as Brother Number Two, Nuon Chea was considered Khmer Rouge leader Pol Pot's right hand man. This is an image from court in 2011.
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