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
1970s in Angola independence of the Republic of Cabinda from Paris. The National Liberation Front of Angola (FNLA) and the National Union for the Total Independence of Angola (UNITA) forged an alliance on November 23, proclaiming their own coalition government based in Huambo with Holden Roberto and Jonas Savimbi as co-presidents and José Ndelé and Johnny Pinnock Eduardo as co-Prime Ministers. The South African government told Savimbi and Roberto in early November that the South African Defence Force (SADF) would soon end operations in Angola despite the coalition's failure to capture Luanda and therefore secure international recognition at independence. Savimbi, desperate to avoid