In a century of mass atrocities, the Khmer Rouge regime marked Cambodia with one of the most extreme genocidal instances in human history. What emerged in the aftermath of the regime's collapse in 1979 was a nation fractured by death and dispersal. It is estimated that nearly one-fourth of the country's population perished from hard labor, disease, starvation, and executions. Another half million Cambodians fled their ancestral homeland, with over...