On November 14, 1980 Prime Minister Joao Bernardo Vieira, known as Nino, overthrew President Luis Cabral of Guinea-Bissau in a bloodless military coup, ending the rule of the country's first president and severing the political union that had linked Guinea-Bissau with Cape Verde. Guinea-Bissau had won independence from Portugal in 1974 under the PAIGC, with Luis Cabral, half-brother of the assassinated liberation leader Amilcar Cabral, as president. By 1980 economic collapse and resentment, including tensions over the perceived dominance of leaders of Cape Verdean origin such as Cabral, had eroded his support.
On November 14, 1980 Vieira, a celebrated independence-war commander who had become prime minister in 1978, led a bloodless coup, deposed Cabral, suspended the constitution, and set up a Revolutionary Council. Cabral was arrested and detained for about 13 months, then sent into exile. The coup ended the planned unification with Cape Verde.
Researched Details
Researched
Independent research, added record by record. Hover any label for what it means.
Target identified in Coup Atlas research: President Luis Cabral, overthrown on November 14, 1980 by his prime minister Vieira; he was arrested and detained for about 13 months before being exiled.
RESEARCHED NAME
Key figures
Luis Cabral (first president, overthrown and jailed)
Joao Bernardo Vieira (prime minister who seized power)
Sources
The 1980 Guinea-Bissau coup was a bloodless military coup on 14 November 1980, led by Prime Minister General Joao Bernardo Vieira, which led to the deposition of President Luis Cabral, who had held office since 1973, and resulted in the abandonment of the proposed unification of Guinea-Bissau with Cape Verde.
On November 14, 1980, Vieira led a military coup against Cabral, who was charged with abuse of power and sentenced to death, and after negotiations Cabral was released from that sentence and went into exile, with the coup deeply resented in Cape Verde and severing the military and political unity that had existed between the two countries.
Cabral's Prime Minister and former armed forces commander Joao Bernardo Vieira organized his overthrow on November 14, 1980 in a military coup, after which Luis Cabral was arrested and detained for 13 months and then sent into exile, first in Cuba and then in Portugal.
On 14 November 1980 Vieira toppled the government of Luis Cabral in a bloodless military coup, the constitution was suspended, and a nine-member military Junta, the Council of the Revolution chaired by Vieira, was set up.
Fate coding: the deposed president Luis Cabral was arrested and detained for about 13 months before being exiled (to Cuba, then Portugal), matching the dataset's arrested-or-jailed fate. A death sentence was reportedly imposed and then lifted after negotiations, a detail recorded from the sources. Coding note: the dataset labels this a military coup, accurately, led by the sitting prime minister and former armed forces commander Vieira. Historical weight recorded: the coup ended the planned political union between Guinea-Bissau and Cape Verde; the Cape Verdean branch of the shared PAIGC party split off in January 1981 to form the PAICV, a lasting consequence. Contested framing recorded: initial reports attributed the coup partly to ethnic and racial tension between the black majority of Guinea-Bissau and leaders of mixed Cape Verdean origin embodied by Cabral; Vieira also accused Cabral of ordering mass executions, an accusation Cabral denied, recorded as contested rather than established. Arc forward: Vieira ruled until 1999 and was assassinated in 2009, separate later events.
Cross-Reference
Datasets agree. At least two of the three reference datasets we check against carry this event, and none of them disagrees about its date or its result.
Identifiers for finding this same event in the other datasets:
Coup Atlas research identifies the target as: President Luis Cabral, overthrown on November 14, 1980 by his prime minister Vieira; he was arrested and detained for about 13 months before being exiled..
Baseline coding: Incumbent executive removed from power. Recorded leader fate: deposed; arrested or jailed. The baseline file does not name individual targets; researched names are kept in a separate layer.
Baseline Dataset Citation
Cline Center Coup d’État Project Dataset, v2.2.2
Peyton, Buddy, Joseph Bajjalieh, Michael Martin, and Andrea Gerald. 2026. Cline Center Coup d’État Project Dataset. Cline Center for Advanced Social Research. V.2.2.2. February 17. University of Illinois Urbana-Champaign. doi: 10.13012/B2IDB-9651987_V10
“Guinea Bissau is Reportedly Celebrating Take-Over...” November 17, 1980
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