1972 in the Vietnam War 1972 in the Vietnam War 1972 in the Vietnam War saw foreign involvement in South Vietnam slowly declining. Two allies, New Zealand and Thailand, which had contributed a small military contingent, left South Vietnam this year. The United States continued to participate in combat, primarily with air power to assist the South Vietnamese army, while negotiators in Paris tried to hammer out a peace agreement and withdrawal strategy for the United States. One American operation that was declassified years after the war was Operation Thunderhead, a secret mission that attempted to rescue POWs. U.S. military personnel in South Vietnam numbered
1965 in the Vietnam War order and evaded pursuit by the ARVN. President Johnson halted the bombing of North Vietnam under Operation Rolling Thunder in an attempt to induce the North Vietnamese to negotiate a peace agreement. North Vietnam instead said the bombing halt was only "an effort to camouflage American intensification of the war." North Vietnam's leader Ho Chi Minh met with Chinese leader Mao Zedong in China. Ho said that North Vietnam would "take the main burden of the war by themselves" but requested additional Chinese economic and military support. Mao agreed and they set the ground rules for Chinese assistance: North Vietnamese