1973 in the Vietnam War to Saigon's flagrant and continued violations of the cease fire." However, the Politburo decided that all-out war was not feasible and that North Vietnam would continue to express adherence to the Paris Peace Accord. Operation End Sweep ended. In accordance with the Paris Peace Accord, the U.S. navy cleared all naval mines from North Vietnamese coastal waters. The total U.S. military presence in South Vietnam, in accordance with the Paris Peace Accord, is now less than 250, excluding the marine guards at the U.S. Embassy in Saigon. The last bombing by American planes anywhere in Indochina took place when B-52s
1972 in the Vietnam War mines off the coast of North Vietnam to prevent ship travel to and from the country. Operation Linebacker II began. Better known as the "Christmas bombings", 129 B-52s and smaller tactical aircraft struck at targets in North Vietnam, including around the city of Hanoi. North Vietnam shot down three B-52s. Military adviser Alexander Haig met with President Thieu in Saigon to deliver a letter from President Nixon. Nixon said it was his "irrevocable intention" to achieve a peace agreement with North Vietnam, preferably with the cooperation of South Vietnam, "but, if necessary, alone." He pledged continue military support to South