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
Cuban intervention in Angola fighting was taken up throughout the whole country. The independence movements attempted to seize key strategic points, most importantly the capital on the day of independence. In a meeting of the United States National Security Council (NSC) on 27 June 1975, U.S. President Gerald Ford said that, in spite of planned elections, it was important to get "his man" in first, referring to then UNITA leader Jonas Savimbi being in control of Luanda before the elections. Arthur Schlesinger pointed out at the same meeting that the U.S. "might wish to encourage the disintegration of Angola. Cabinda in the clutches of