Put it together: Why did the USA lose in Vietnam?

H1 History - syllabus 8838, 2027

Choose a factor and weigh it against the others.

Which factor best explains the American failure?

North Vietnamese determination

  • Hanoi absorbed huge losses without giving up.
  • It controlled its own strategy and timing.

The USA could not break an opponent willing to fight indefinitely.

Determination alone needed outside supplies and a safe base.

South Vietnam's weakness

  • Diem's repression alienated many southerners.
  • Unstable governments followed his overthrow in 1963.

The USA was propping up a state that lacked broad support.

South Vietnam fought hard at times, for example during Tet.

Limits of American strategy

  • Fear of China stopped an invasion of the North.
  • Bombing did not stop supplies down the trail.

A limited war could not defeat an opponent fighting a total one.

Escalating further risked a much wider war.

American public opinion

  • Tet shattered confidence in 1968.
  • Nixon had to withdraw troops to keep support.

Domestic pressure forced the USA to leave before Saigon could stand alone.

Opinion turned partly because the war was not being won.

Sources and context

Background reading for this chapter.

  • Johnson explains why Americans are in Vietnam

    Paraphrase of President Lyndon Johnson's address at Johns Hopkins University, 7 April 1965.

  • McNamara recommends more troops

    Paraphrase of a memorandum from Secretary of Defense Robert McNamara to President Johnson, 20 July 1965.

  • The Geneva final declaration

    Paraphrase of paragraph 7 of the final declaration of the Geneva Conference on Indochina, 20 July 1954, as cabled by the US delegation.

  • Nixon appeals to the silent majority

    Paraphrase of President Richard Nixon's televised address to the nation on the war in Vietnam, 3 November 1969.

  • Eisenhower explains the stakes, 1954

    Extract from President Dwight Eisenhower's news conference of 7 April 1954, answering a question on the strategic importance of Indochina, a month before the French defeat at Dien Bien Phu. A US government record in the public domain; text from the American Presidency Project.

  • a Defense official ranks American aims, March 1965

    Extract from "Action for South Vietnam", a paper prepared by John McNaughton, Assistant Secretary of Defense for International Security Affairs, Washington, 10 March 1965, two days after the first US Marines landed at Da Nang. Foreign Relations of the United States, 1964-1968, volume II, document 193. A US government document in the public domain.

  • the Secretary of State on American commitments, July 1965

    Extract from a paper by Secretary of State Dean Rusk, Washington, 1 July 1965, written for the President's meeting on whether to send large numbers of combat troops. Foreign Relations of the United States, 1964-1968, volume III, document 39. A US government document in the public domain.

  • the Under Secretary of State dissents, July 1965

    Extract from "A Compromise Solution for South Viet-Nam", a paper by Under Secretary of State George Ball for the same meeting, Washington, undated (circulated 1 July 1965). The President's security adviser predicted that Johnson would "listen hard to George Ball and then reject his proposal". Foreign Relations of the United States, 1964-1968, volume III, document 40. A US government document in the public domain.

  • the Secretary of Defense explains the strategy, November 1965

    Extract from a draft memorandum from Secretary of Defense Robert McNamara to President Johnson, "Courses of Action in Vietnam", Washington, 3 November 1965. Foreign Relations of the United States, 1964-1968, volume III, document 189. A US government document in the public domain.

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