Cambodian Civil War

Civil war in Cambodia from 1970 to 1975 between the Khmer Rouge, backed by North Vietnam and China after the 1970 ouster of Norodom Sihanouk, and the US-backed Khmer Republic. US aerial bombing and North Vietnamese occupation devastated the country, killing an estimated 275,000-310,000 people and displacing over two million. On 17 April 1975 the Khmer Republic fell, and the victorious Khmer Rouge established Democratic Kampuchea, which carried out the Cambodian genocide.