Cambodian leader Lon Nol was a military commander and politician who served as the Prime Minister of Cambodia from 1970 to 1975 and then as President from 1972 to 1975. He led a coup against Prince Norodom Sihanouk and assumed power in 1970, leading the country during the Cambodian Civil War and the Khmer Rouge insurgency. He was overthrown in 1975 by the Khmer Rouge and died in exile in 1985.