Cuban intervention in Angola the requested financial assistance (100,000US$) it received from Yugoslavia. Portugal's sudden retreat from Angola and Mozambique in 1975 ended a history of South African military and intelligence cooperation with Portugal against the Angolan and Namibian independence movements dating back to the 1960s, later formalized in a secret alliance codenamed Alcora Exercise. It also ended economic cooperation with regard to the Cunene hydro-project at the Angolan-Namibian border, which South Africa had financed. South African involvement in Angola, subsumed under what it called the South African Border War, started in 1966 when the conflict with the Namibian independence movement, South West Africa
CIA activities in Angola for clandestine operations in which covert operations were authorized: “The first meeting involved only money, but the second included some arms package." Beginning in 1975, the CIA participated in the Angolan Civil War, hiring and training American, British, French and Portuguese private military contractors, as well as training National Union for the Total Independence of Angola (UNITA) rebels under Jonas Savimbi, to fight against the Popular Movement for the Liberation of Angola (MPLA) led by Agostinho Neto. John Stockwell commanded the CIA's Angola effort in 1975 to 1976. In a meeting including President Richard Nixon and Chinese Vice-Premier Deng Xiaoping,