PHNOM PENH, Cambodia — Shortly after Vietnamese tanks rumbled across Cambodia’s border in late 1978 the Khmer Rouge elite fled the capital and a new regime first attempted what the United Nations is poised to try again more than a quarter of a century later — account for the grisly deaths of up to two million people. Pol Pot and perhaps his closest friend from their university days in France, Ieng Sary, were long ago sentenced to death in absentia for genocide, in a trial widely regarded as a legal farce. It was so badly handled and wrapped-up in Cold […]