IN THE early morning hours of January 30, 1964, another coup—the second in less than three months—occurred in Saigon. The instigator was General Nguyen Khanh, a member of the anti-Diem cabal who was aggrieved because he had been promised that no harm would come to the president and that he would get a handsome reward for his treachery. Neither promise had been fulfilled: Diem had been killed, and Khanh had been relegated to a corps command in the northwest. Khanh placed most of the leading generals responsible for the anti-Diem coup under house arrest. Khanh