At the beginning of the 1960s, SWAPO and SWANU differed more in their support bases than in their central political aims. Both were nationalist organisations committed to self-determination and independence for Namibia, and both supported Pan-Africanism. SWAPO’s programme, first formulated in 1960, combined political freedoms with social and economic transformation.

The programme called for democracy and free speech, the abolition of the migrant-labour system and racial discrimination, and the nationalisation of major industries. Its international outlook was shaped by the experience of Ghana’s independence in 1957 and by Namibia’s contested position under South African rule. SWAPO placed particular emphasis on using Namibia’s special status at the United Nations to unlock political change.

SWAPO’s social base widened during the early 1960s. It spoke at public meetings called by traditional leaders in Owambo, campaigned on behalf of individuals, and maintained links with the Herero Chief’s Council. In November 1964, the Caprivi African National Union merged with SWAPO; the alliance brought Caprivi leaders Brendan Simbwaye and Mishake Muyongo into senior positions.

Internationally, SWAPO benefited from Soviet support and from its relationship with the Organisation of African Unity, founded in 1963. The OAU offered funds to SWAPO and SWANU on the condition that they planned military action in support of Namibia’s liberation. After SWAPO produced such plans in 1964, the OAU recognised it in 1965 as the only Namibian nationalist organisation it would support.

By the end of the 1960s, SWAPO in exile had secured considerable international support, although its external wing remained small, its organisation rudimentary, and its resources for armed struggle limited. These constraints generated discontent within the movement. In 1968, seven military trainees returned from China to the Kongwa camp in Tanzania and protested what they regarded as poor organisation, corruption, and military inactivity.

The protest was treated as mutiny, and the group was arrested and imprisoned in Tanzania. SWAPO nevertheless held its first Consultative Congress at Tanga from 26 December 1969 to 2 January 1970. The Congress ratified the decision to adopt armed struggle and created a Women’s Council, a Youth League, a Department of Labour, and an Elders’ Council, although it did not resolve every cause of dissent.

The crisis foreshadowed later conflict within SWAPO. A heavy-handed and authoritarian response allowed Sam Nujoma and those around him to consolidate authority over the movement, including through the imprisonment of members who expressed dissent. At the same time, the Tanga Conference revealed the uneasy relationship between SWAPO inside and outside Namibia: the external wing increasingly possessed diplomatic influence and financial resources, becoming more powerful than the internal movement.

During the 1970s and 1980s, SWAPO became a stronger diplomatic, political, and partly military challenge to the South African regime. The movement also helped organise youth and worker mobilisation, including the protests that followed the 1971 student expulsions at Ongwediva and the formation of the SWAPO Youth League. These developments placed SWAPO at the centre of Namibia’s struggle for self-determination and eventual independence.