1965    Nguyen Cao Ky became Prime Minister of South Vietnam at the head of a military junta; General Nguyen Van Thieu became the figurehead chief of state.

1969    Vietnam War: US President Richard M. Nixon makes an unscheduled visit to South Vietnam and meets with President Nguyễn Văn Thiệu and U.S. military commanders.

1972    Vietnam War: In Saigon, Henry Kissinger and South Vietnamese President Nguyen Van Thieu meet to discuss a proposed cease-fire that had been worked out between Americans and North Vietnamese in Paris.

1975    Vietnam War: President of South Vietnam Nguyen Van Thieu flees Saigon, as Xuan Loc, the last South Vietnamese outpost blocking a direct North Vietnamese assault on Saigon, falls.