On Jan. 7, 1979, invading Vietnamese troops captured the Cambodian capital of Phnom Penh, toppling the brutal regime of Pol Pot and his Khmer Rouge. Pol Pot had attempted to establish an agrarian utopia, evacuating the cities and closing schools and factories. He abolished private property and created collective farms. Intellectuals and skilled workers were killed and modern technology outlawed. An estimated two million Cambodians died by execution, forced labor, and starvation.