Coup Atlas Research Database
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14512091977AttemptedMilitary coup

Bolivia, 1977 — military coup attempt

Bolivia (BOL)South America, AmericasDecember 9, 1977

Event Summary

The dataset records an attempted military coup in Bolivia on 9 December 1977 during the final phase of the long right-wing dictatorship of General Hugo Banzer, who had ruled since 1971 and was, under domestic and international pressure, moving toward a promised return to democracy. In November 1977 Banzer had announced elections, and the period was marked by mounting unrest, a famous hunger strike by miners' wives for amnesty, and maneuvering within the military over the transition. A coup attempt in December 1977 came within that turbulent context and did not unseat Banzer.

He was, however, near the end of his rule; in 1978 he stepped aside after fraud plagued elections, opening one of the most chaotic periods in Bolivian history, a rapid succession of coups and short-lived governments including the successful July 1978 coup by Juan Pereda, that continued until a fragile return to civilian democratic rule at the start of the 1980s.

Researched Details

Researched

Independent research, added record by record. Hover any label for what it means.

Target identified in Coup Atlas research: General Hugo Banzer survived the December 1977 plotting during his managed transition and left power in 1978
RESEARCHED NAME
Key figures
Hugo Banzer (president of Bolivia, target)
Dissident military officers (plotters)

Sources

Hugo Banzer ruled Bolivia as a military dictator from 1971 and, under pressure, announced a return to democracy in the late 1970s.
SOURCE REVIEWED Wikipedia, Hugo Banzer open source ↗
The transition period was marked by unrest, including a hunger strike by miners' wives demanding amnesty, and maneuvering within the military.
SOURCE REVIEWED Wikipedia, Hugo Banzer open source ↗
Banzer left power in 1978 after fraud plagued elections, and Juan Pereda seized power in a July 1978 coup.
SOURCE REVIEWED Wikipedia, List of coups and coup attempts by country open source ↗
Bolivia then entered a chaotic period of rapid coups and short-lived governments until a return to civilian rule at the start of the 1980s.
SOURCE REVIEWED Wikipedia, History of Bolivia open source ↗

Editorial Note

No discrete documentation of a coup attempt precisely on 9 December 1977 in Bolivia was found in accessible English sources this session; the entry records the dataset's coding and the verified context of the late Banzer dictatorship during its managed transition, with the specific event and plotters unconfirmed, flagged as context only. Continues the long Bolivia run; a second 1979 Bolivia record follows in this batch.

Cross-Reference

Only one dataset carries it. One of the three reference datasets we check against carries this event; the others do not list it. That is not a contradiction — the datasets cover different periods and use different thresholds — but it means the record has had less outside corroboration.

Identifiers for finding this same event in the other datasets:

Cline Center id
14512091977

How the match is made is described in crossref-report.md.

Outcome and Target

Coup Atlas research identifies the target as: General Hugo Banzer survived the December 1977 plotting during his managed transition and left power in 1978.

Baseline coding: Coup attempt failed to remove the incumbent. Recorded leader fate: remained in office; not physically harmed. 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
⚑ This citation establishes the coded baseline record; use the claim-level sources above for the researched narrative.

Baseline Source-Document Entries

Luttwak

Named in the baseline source document; no article citation was recorded.

Boston Globe

“IN BRIEF: Bolivia plot cited,” December 10, 1977

Washington Post

“Bolivia Says It Crushed Plot Against Gen. Banzer’s Military Rule: Around the World SST Flight to Asia Portuguese Politics Changes in Peking Bangladesh Politics For the Record,” December 10, 1977

This is the citation trail carried by the baseline dataset, grouped by outlet and rejoined from the line-wrapped original. Coup Atlas has not independently re-checked every document; read the original before citing a specific claim. URLs the import damaged beyond safe repair are shown as plain text and listed in citations-report.md. How this list is built →

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