A March 5 CIA-Army memo said Saigon would hold - forty-seven days later it collapsed. How did Washington get it so wrong?
The CIA memo that insisted Saigon would hold-then the capital fell
In this episode, we lay out the timeline and decisions that framed the last weeks of South Vietnam. You’ll hear how intelligence, politics, and battlefield shocks intersected and why those intersections left key questions unanswered.
Person: President Nguyễn Văn Thiệu
Date: March 5, 1975 memo; April-April 30, 1975 events
Location: Saigon (South Vietnam)
Event: Hồ Chí Minh Campaign and rapid southern advance
Topic: CIA and Army Intelligence assessments versus battlefield reality
- March 5, 1975: CIA and Army Intelligence formally told Washington South Vietnam could hold through at least 1976.
- March 10, 1975: General Văn Tiến Dũng launched the Hồ Chí Minh Campaign, capturing Buôn Ma Thuột the same day.
- Mid-April 1975: Five PAVN corps, fifteen divisions, tanks and artillery encircled Saigon with the frontline twenty-six miles from downtown.
- April 21, 1975: President Thiệu resigned and warned the United States it had asked South Vietnam to do “an impossible thing.”
- Congressional cuts, emergency aid requests, and the fear that evacuation would signal collapse shaped U.S. decisions as the city rapidly unraveled.
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