 On 11 November 1960, "a failed coup attempt against President Ngô Đình Diệm of South Vietnam was led by Lieutenant Colonel Vương Văn Đông and Colonel Nguyễn Chánh Thi of the Airborne Division of the ARVN (ARVN)".There was a further attempt to assassinate Diệm and his family in February 1962 when two air force officers—acting in unison—bombarded the Presidential Palace.In 1962, the cornerstone of Diệm's counterinsurgency effort – the Strategic Hamlet Program ("Vietnamese