"failed coup in September 1964" . . . "Nguy\u1EC5n Cao K\u1EF3andNguy\u1EC5n Ch\u00E1nh Thigained more leverage over junta leaderNguy\u1EC5n Kh\u00E1nh" . "threatened by a coup attempt" . . . . "September 1964 South Vietnamese coup attempt" . "coup attempt in September" . . "in September" . . "September 1964 South Vietnamese coup attempt" . . . "coup attempt in September 1964" . . "Army of the Republic of Vietnam(ARVN) rebels" . "Unclear" . "Coup failed without bloodshed;" . "22pxSouth Vietnam" . "coup attempt" . . . . . . . . . "Army of the Republic of Vietnam(ARVN) ruling junta" . "coup d'\u00E9tat" . "September 1964" . . "Ten battalions" . . . . . .