PHNOM PENH, CAMBODIA - APRIL 17:  An archive picture from Agence Khmere de Presse shows Cambodian people leaving Phnom Penh after Khmer Rouge forces seized and emptied the Cambodian capital 25 years ago, on the17 April 1975. The 25th anniversary of the Khmer Rouge seizing Phnom Penh will doubtless be a time of sombre reflexion on Cambodia's genocide for both the UN and the Cambodian government who need a trial for their own different reasons, with the UN keen to extinguish lingering cynicism over its continued recognition of Pol Pot rebels after their 1979 ouster.  (Photo credit should read AFP/AFP via Getty Images)