Until the fall of the Portuguese dictatorship in 1974, apartheid in South Africa was secure. There was no substantial resistance anywhere in southern Africa. Pretoria’s neighbors comprised a buffer zone that protected the racist regime: Namibia, their immediate neighbor which they had occupied for 60 years; white-ruled Rhodesia; and the Portuguese-ruled colonies of Angola and Mozambique. The rebels who fought against minority rule in each of these countries, operating without any safe haven to organize and train, were powerless to challenge the status quo. South Africa’s buffer would have remained intact for the foreseeable future, solidifying apartheid and preventing any significant opposition, but for one man: Fidel Castro.

In October of 1975, South Africa invaded Angola at the behest of the U.S. government to overthrow the left-wing Popular Movement for the Liberation of Angola (MPLA) in the soon-to-be independent country. Without Cuban assistance, the apartheid army would have easily cruised into Luanda, crushed the MPLA, and installed a puppet government friendly to the apartheid regime.

Cuba’s intervention in Angola managed to change the course of that country and reverberate throughout Africa. By ensuring independence from the white supremacists, Angola was able to preserve its own revolution and maintain its role as a base for armed resistance groups fighting for liberation in nearby countries.

In the American version of Cold War history, Cuba was carrying out aggression and acting as proxies of the Soviet Union. Were it not for one persistent and meticulous scholar, we might never have known that these are nothing more than dishonest fabrications. In his monumental books Conflicting Missions and Visions of Freedom, historian Piero Gleijeses uses thousands of documents from Cuban military archives, as well as U.S. and South African archives, to recount a dramatic, historical confrontation between tiny Cuba and Washington and its ally apartheid South Africa. Gleijeses is the only foreign scholar to have gained access to the closed Cuban archives. He obtained thousands of pages of documents, and made them available to the Wilson Center Digital Archive, which has posted the invaluable collection online.

Gleijeses’s research made possible a look behind the curtain at one of the most remarkable acts of internationalism of the century. “Internationalism – the duty to help others – was at the core of the Cuban revolution,” Gleijeses writes. “For Castro’s followers, and they were legion, this was not rhetoric… By 1975, approximately 1,000 Cuban aid workers had gone to a dozen African countries, South Yemen, and North Vietnam. In 1976-77, technical assistance was extended to Jamaica and Guyana in the Western Hemisphere; to Angola, Mozambique, and Ethiopia in Africa; and to Laos in Asia. The CIA noted: ‘The Cuban technicians are primarily involved in rural development and educational and public health projects – areas in which Cuba has accumulated expertise and has experienced success at home.’” ...