July 4, 1963: Vietnamese general notifies CIA of planned coup

U.S. President Dwight D. Eisenhower and Secretary of State John Foster Dulles (from left) greet South Vietnamese President Ngo Dinh Diem at Washington National Airport. 05/08/1957 ARC Identifier: 542189 Item from Record Group 342: Records of U.S. Air Force Commands, Activities, and Organizations, 1900 - 2000 Part of Series: Black and White Photographs of U.S. Air Force and Predecessors' Activities, Facilities, and Personnel, Domestic and Foreign, 1930 - 1975 (Photo credit: Wikipedia)

By this time, JFK had concluded that the Diem regime couldn't win the war against Ho and the North.
http://www.history.com/this-day-in-history/south-vietnamese-officers-plot-coup

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