Tôn Đức Thắng was the second president of Vietnam under the leadership of General Secretary Lê Duẩn. The position of president is ceremonial and Tôn was never a major policymaker or even a member of the Politburo, Vietnam's ruling council. He served as president, initially of North Vietnam from September 2, 1969, and later of a united Vietnam, until his death in 1980.

Lê Duẩn was a Vietnamese communist politician. He rose in the party hierarchy in the late 1950s and became General Secretary of the Central Committee of the Communist Party of Vietnam (VCP) at the 3rd National Congress in 1960. He continued Hồ Chí Minh's policy of ruling through collective leadership. From the mid-1960s until his own death in 1986, he was the top decision-maker in Vietnam.