Coup Atlas Research Database
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58106041977AttemptedMilitary coup

Comoros, 1977 — military coup attempt

Comoros (COM)East Africa, AfricaJune 4, 1977

Event Summary

The dataset records an attempted military coup in the Comoros on 4 June 1977 during the turbulent revolutionary rule of President Ali Soilih, who had seized power in 1975 and launched a radical program to transform the conservative Indian Ocean island society. Soilih, who governed with a cadre of young followers, attacked the power of the traditional elites and Islamic clergy, abolished many customary institutions, burned government archives, and empowered a youth militia, alienating much of the population. His erratic and increasingly repressive rule provoked recurrent unrest and plots.

A coup attempt in June 1977 came within that instability and did not unseat Soilih. His regime, however, was living on borrowed time. In May 1978 the mercenary Bob Denard, who had originally helped bring Soilih to power, returned at the head of a small mercenary force and overthrew him, restoring the exiled former president Ahmed Abdallah; Soilih was killed shortly afterward, reportedly shot while trying to escape.

Researched Details

Researched

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

Target identified in Coup Atlas research: President Ali Soilih survived the June 1977 plotting but was overthrown by Bob Denard's mercenaries in 1978
RESEARCHED NAME
Key figures
Ali Soilih (president of the Comoros, target)
Dissident plotters (unconfirmed)

Sources

Ali Soilih seized power in the Comoros in 1975 and pursued a radical revolutionary program against the traditional elites and Islamic clergy.
SOURCE REVIEWED Wikipedia, Ali Soilih open source ↗
Soilih's erratic and repressive rule, including empowering a youth militia and burning archives, alienated much of the population and provoked unrest.
SOURCE REVIEWED Wikipedia, Ali Soilih open source ↗
In May 1978 the mercenary Bob Denard overthrew Soilih and restored the former president Ahmed Abdallah.
SOURCE REVIEWED Wikipedia, Ali Soilih open source ↗
Soilih was killed shortly after his overthrow, reportedly shot while trying to escape.
SOURCE REVIEWED Wikipedia, Ali Soilih open source ↗

Editorial Note

No discrete documentation of a coup attempt precisely on 4 June 1977 in the Comoros was found in accessible English sources this session; the entry records the dataset's coding and the verified context of the unstable Ali Soilih regime, with the specific event and plotters unconfirmed, flagged as context only. First Comoros record in the dataset run; Soilih was overthrown by Bob Denard in 1978, the same mercenary who raided Benin in this batch.

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:

Cline Center id
58106041977
Albrecht/Koehler/Schutz (CAM) id
CAM-581-1977-06-05

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

Outcome and Target

Coup Atlas research identifies the target as: President Ali Soilih survived the June 1977 plotting but was overthrown by Bob Denard's mercenaries 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

CSP

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

Luttwak

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

Baltimore Sun

“Airport won as Comoros Coup fails,” June 6, 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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