As long as Portugal was present in Angola, the movements had to have their headquarters in independent neighbouring countries, making Congo-Léopoldville (Democratic Republic of the Congo, formerly Belgian), for both MPLA and FNLA a logical choice.
[60] On 22 January 1975, one week after the Alvor Accords were signed and just before the provisional government of Angola was to take office, the U.S. National Security Council's "40 Committee", which oversaw clandestine CIA operations, authorized US $300,000 in covert aid to the FNLA.
[72] MPLA guerrillas received their first training from Cubans in Algiers starting in 1963 and Che Guevara met MPLA-leader Agostinho Neto for the first high-level talks on 5 January 1965 in Brazzaville where Cuba was establishing a two-year military mission.
With the loss of the Portuguese as an ally and the establishment of pro-SWAPO communist rule in the two former colonies, the apartheid regime lost highly valued sections of its "cordon sanitaire" (buffer zone) between itself and hostile black Africa.
It was behind a coup attempt in Tanzania in 1983, provided support for rebels in Zimbabwe since independence, carried out raids against African National Congress offices in Maputo, Harare and Gaborone and conducted a counterinsurgency war in Namibia against SWAPO.
"[100][101] After the return of the delegation on 8 August, the Cubans considered the options of their instructors in Angola in case of an intervention by South Africa or Zaire which would be either "guerrilla war" or withdrawal to Zambia, where Cuba proceeded to open an embassy.
Small groups continued to trickle into Luanda on such flights as well as on Cuba's aging Britannia planes and the bulk arrived after a two-week trip aboard three Cuban cargo vessels; the first one, the "Vietnam Heroico" docked at Porto Amboim on 5 October.
[110] In contrast to the successes in the south, where by mid October the MPLA had gained control of 12 of Angola's provinces and most urban centres, they only barely managed to keep the well equipped FNLA and its allies abreast on the northern front just east of Luanda.
It was only two months later after the fighting swung in favour of the Cubans and the U.S. passed the Clark Amendment that Moscow agreed to a degree of support by arranging for a maximum of 10 transport flights from Cuba to Angola.
[123] After artillery bombardment on Luanda and Quifangondo through the night and a bombing raid by the South African air force in the early hours the final attack of the FNLA was launched on the morning of 10 November.
Gabriel García Márquez wrote that Kissinger remarked to Venezuelan President Carlos Andrés Pérez: 'Our intelligence services have grown so bad that we only found out that Cubans were being sent to Angola after they were already there.'
[154] Thus, Zulu and Foxbat continued north with two new battle groups formed further inland (X-Ray and Orange) and "there was little reason to think the FAPLA would be able to stop this expanded force from capturing Luanda within a week.
The first Cuban reinforcements arrived in Porto Amboim, only a few km north of Novo Redondo, quickly destroying three bridges crossing the Queve river, effectively stopping the South African advance along the coast on 13 November 1975.
[170][171] The sentiment of the Pretoria government at the time was expressed in a speech by Botha before South African parliament on 17 April 1978, in which he charged the U.S. with "defaulting on a promise to give them all necessary support in their campaign to defeat the MPLA":[136] "Against which neighbouring states have we taken aggressive steps?
In late January, the SADF abandoned the towns of Cela and Novo Redondo [173] Apart from a few skirmishes, the Cubans stayed well behind the retreating South Africans and easily overcame the remaining UNITA resistance.
[179] "The internal repercussions of the Angolan debacle were felt quickly when, on 16 June 1976 – emboldened by the FAPLA-Cuban victory – the Soweto Uprising began, inaugurating a period of civil unrest which was to continue up until and beyond the collapse of apartheid.
"[179] Another setback for Pretoria within four years was the end of white minority rule in Rhodesia as it emerged as the next black majority-ruled nation of Zimbabwe, completing the total geographic isolation of apartheid South Africa.
[181] At their meeting in Conakry on 14 March 1976, when victory was already assured, Castro and Neto decided that the Cubans would withdraw gradually, leaving behind for as long as necessary enough men to organize a strong, modern army, capable of guaranteeing the MPLA's future security without outside help.
In early 1977, the new Carter administration had in mind to recognize the MPLA-government despite the presence of Cuban troops assuming they would be withdrawn once the Namibian issue was settled and the southern border of Angola was secure.
Cuban technical, educational and medical staff in the tens of thousands were working in even more countries: Algeria (Tindouf), Mozambique, Cape Verde, Guinea-Bissau, Guinea, Ethiopia, São Tomé and Príncipe, Tanzania, the Congo and Benin.
The revulsion at the carnage of the "Cassinga raid" and the ensuing international outcry led to the adoption of UN Security Council Resolution 435 on 29 September 1978, calling for Namibia's independence and, to that end, for the establishment of a "Transition Assistance Group".
[216] By late 1978 the MPLA's security had been steadily deteriorating and UNITA emerging as a formidable guerrilla army, expanding its operations from Cuando Cubango into Moxico and Bié while the SADF intensified its cross-border campaigns from Namibia.
Losing its last ally (Rhodesia) in the region, South Africa adopted the policy of "Total Onslaught" vowing "to strike back at any neighbouring states which harboured anti-apartheid forces".
[239] The Cubans' initial priority was saving Cuito Cuanavale, but while enforcements were arriving at the besieged garrison they made preparations for a second front in Lubango, where the SADF had been operating unhindered for where years.
[35] Starting 21 December the South Africans planned the final operation to "pick off" the five FAPLA brigades which were still to the east of the Cuito river "before moving in to occupy the town if the conditions were favourable".
[251] Five days later Pretoria ordered a combat group still operational in southeastern Angola to scale back to avoid any more casualties, effectively withdrawing from all fighting, and a SADF division was deployed in defence of Namibia's northern border.
But it was not until January 1988 that U.S. Secretary of State George Shultz authorized the American delegation to hold direct talks with the Cubans with the strict provision that they only discuss matters of Angola and Namibia but not the US embargo against Cuba.
"[33][259] Crocker cabled Secretary of State George Shultz that the talks had taken place "against the backdrop of increasing military tension surrounding the large build-up of heavily armed Cuban troops in south-west Angola in close proximity to the Namibian border....
The timetable agreed upon provided for the following steps: The accord ended 13 years of Cuban military presence in Angola which was finalized one month early on 25 May 1991, when General Samuel Rodiles Planas boarded the aircraft that took him back to the island.
The Cuban internationalists have made a contribution to African independence, freedom and justice unparalleled for its principled and selfless character - We in Africa are used to being victims of countries wanting to carve up our territory or subvert our sovereignty.