ANSWER Ho Chi Minh was the president of North Vietnam during the Vietnam War his original name was Nguyen Tat. Diem was the president of South Vietnam. Diem was assassinated Nguyen Van Thien was the president of South Vietnam after him.
Diem & Thieu
Diem, later Thieu.
First Diem, later Thieu
The Fall of Saigon, which occurred on April 30, 1975, happened during the presidency of Gerald Ford. It marked the end of the Vietnam War.
Nguyen Van Thieu
Thieu was president, until North Vietnam conquered his country (South Vietnam).
The latest president, at the time of South Vietnam's fall was President Nguyen Van Thieu.
Lyndon Baines Johnson
No Vietnamese prime minister was assasinated, but South Vietnam President Ngo Dinh Diem was killed by Vietcong during a raid from north to south during the Vietnam War.
There was NO South Vietnam in the 1940's.
Nixon.