1972 in the Vietnam War the number of air raids against North Vietnam during all of 1971. Prime Minister Lon Nol declared President of Cambodia. Unlike the former Cambodian leader, Norodom Sihanouk, Lon Nol was a U.S. ally. The U.S. 101st Airborne Division left South Vietnam, the last U.S. ground combat division to be withdrawn from South Vietnam. The Khmer Rouge bombarded with artillery Phnom Penh, the capital city of Cambodia, killing more than 100 civilians. This was the heaviest attack on Phnom Penh since the Cambodian Civil War began in 1970. The United States boycotted peace negotiations in Paris with the North Vietnamese, citing
1972 in the Vietnam War National Security Adviser Kissinger documents outlining the communist proposal for a peace agreement in Vietnam. The proposal dropped demands for the ouster of President Thieu of South Vietnam and called for the withdrawal of all American troops, the release of all American prisoners of war. and a cease fire "in place" which would allow North Vietnamese soldiers in South Vietnam to remain there. A tentative text was agreed upon by both sides. Kissinger met with Nixon in Washington to explain the draft peace agreement with North Vietnam. Nixon approved the agreement subject to the agreement of President Thieu of South