The coup d'état was designed by a military revolutionary council including ARVN generals led by General Dương Văn Minh. Lieutenant Colonel Lucien Conein, a CIA officer, had become a liaison between the US Embassy and the generals, who were led by Trần Văn Đôn. They met each other for the first time on 2 October 1963 at Tân Sơn Nhất airport. Three days later, Conein met with General Dương Văn Minh to discuss the coup and the stance of the US towards it. Conein then delivered the White House's message of American non-intervention, which was reiterated by Henry Cabot Lodge Jr., the US ambassador, who gave secret assurances to the generals that the United States would not interfere.