Coup Atlas Research Database
← Back to explorer
04008081959ConspiracyMilitary coup

Cuba, 1959 — military coup conspiracy

Cuba (CUB)Caribbean, AmericasAugust 8, 1959

Event Summary

The dataset records an event coded as a military, dissident, foreign-backed conspiracy in Cuba on 8 August 1959, corresponding to the Trujillo Conspiracy (Conspiracion Trujillista), a Dominican-backed plot to overthrow Fidel Castro in the summer of 1959. Dominican dictator Rafael Trujillo, fearing Castro would export revolution after Cuban-backed expeditions targeted the Dominican Republic in June 1959, prepared a counter-revolutionary foreign legion of Cuban exiles and roughly 200 former Batista soldiers to invade Cuba and support an internal anti-Castro, anti-communist uprising. The plot was penetrated by Second Front of Escambray leaders William Morgan and Eloy Gutierrez Menoyo, who feigned participation while informing Castro; the trap was sprung in mid-August 1959, capturing the Dominican-backed invaders who landed near Trinidad.

The foiled conspiracy deepened the Cuba-Dominican Republic feud and hardened Castro's regime against internal dissent.

Researched Details

Researched

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

Target identified in Coup Atlas research: Castro foiled the Trujillo-backed plot and consolidated his revolutionary government
RESEARCHED NAME
Key figures
Fidel Castro (Cuban leader, target)
Rafael Trujillo (Dominican dictator, foreign backer)
William Morgan and Eloy Gutierrez Menoyo (double agents who exposed the plot)

Sources

The dictator of the Dominican Republic, General Trujillo, launched an unsuccessful invasion of Cuba in the summer of 1959.
SOURCE REVIEWED American Heritage, The US and Castro 1959-1962 open source ↗
Trujillo prepared a counter-revolutionary foreign legion aimed against Cuba, recruiting several hundred mercenaries including 200 former Batista soldiers who were secretly transferred to the Dominican Republic.
SOURCE REVIEWED Latin American Studies, The Trujillo Conspiracy open source ↗
Trujillo's dictatorial regime prepared a counter-revolutionary force aimed against Cuba, in the context of mutual Cuba-Dominican hostility after the June 1959 Cuban-backed expeditions against the Dominican Republic.
SOURCE REVIEWED U.S. State Department, FRUS 1958-60 vol. V open source ↗

Editorial Note

Near-exact date match: the coded 8 August 1959 falls within the mid-August 1959 climax of the Trujillo Conspiracy, when the trap was sprung near Trinidad. The military, dissident, foreign-backed coding fits a Trujillo-backed plot by dissident ex-Batista military elements. Distinct from the October 1959 Matos affair. Second Cuba record, after the Barquin/Puros plot in the earlier 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
04008081959

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

Outcome and Target

Coup Atlas research identifies the target as: Castro foiled the Trujillo-backed plot and consolidated his revolutionary government.

Baseline coding: Plot discovered and disrupted before execution. 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

Chicago Daily Tribune

“Cuba Arrests 3,000 to Halt Conspirators: Castro Regime Claims Plot is Smashed,” August 12, 1959

New York Times

“Army is Alerted in Cuban Unrest: Castro’s Home is Attacked – 200 Soldiers Reported Arrested as Plotters,” August 10, 1959
“Cuba Arrests 1,000 in Smashing a Plot: Cuba Seizes 1,000 to Crush a Plot,” August 11, 1959
“Cuba Said to Hold 4,500 as Plotters: Castro Acts Against Major Conspiracy – Army Post Reported Under Attack Cuba Said to Hold 4,500 as Plotters,” August 12, 1959

Washington Post and Times Herald

“Agents Seize Anti-Castro Ringleaders: Undercover Staff Nips Conspiracy At Secret Meeting,”August 12, 1959

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 →

Know something about this event?
Tips are reviewed against sources before anything is added.