Coup Atlas Research Database
← Back to explorer
52004091978AttemptedDissident coup

Somalia, 1978 — dissident coup attempt

Somalia (SOM)East Africa, AfricaApril 9, 1978

Event Summary

On 9 April 1978 a group of disaffected army officers attempted a violent coup in Somalia against the regime of President Siad Barre, in the bitter aftermath of Somalia's defeat in the Ogaden War against Ethiopia. The coup, led by Colonel Mohamed Osman Irro and involving by CIA estimate around two dozen officers, two thousand soldiers, and sixty five tanks, was driven by fury among officers, many from the Majeerteen clan of the north and center, over the disastrous Ogaden campaign and over Barre's favoritism toward his own Marehan clan. Barre, who had advance warning, moved against the plotters and crushed the ill organized rising, after which seventeen alleged ringleaders including Osman were summarily executed by firing squad.

The attempt's most lasting consequence was that one escaped plotter, Lieutenant Colonel Abdullahi Yusuf Ahmed, fled to Ethiopia and founded the Somali Salvation Democratic Front, the first of the armed opposition movements whose insurgencies would eventually help bring down Barre and plunge Somalia into civil war.

Researched Details

Researched

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

Target identified in Coup Atlas research: President Siad Barre crushed the April 1978 coup attempt and executed the ringleaders, remaining in power until 1991
RESEARCHED NAME
Key figures
Siad Barre (president of Somalia, target)
Mohamed Osman Irro (colonel, coup leader, executed)
Abdullahi Yusuf Ahmed (plotter who escaped and founded the SSDF)

Sources

The 1978 Somali coup attempt was a violent military coup attempt on 9 April 1978 against the regime of President Siad Barre, led by Colonel Mohamed Osman Irro and involving around 24 officers, 2,000 soldiers, and 65 tanks by CIA estimate.
SOURCE REVIEWED Wikipedia, 1978 Somali coup attempt open source ↗
The coup was staged by disgruntled army officers in the aftermath of the disastrous Ogaden War against Ethiopia, which Barre had initiated.
SOURCE REVIEWED Wikipedia, 1978 Somali coup attempt open source ↗
Following the failed coup, 17 alleged ringleaders including Osman were summarily executed by firing squad.
SOURCE REVIEWED Wikipedia, 1978 Somali coup attempt open source ↗
One plotter, Lieutenant Colonel Abdullahi Yusuf Ahmed, escaped to Ethiopia and founded the Somali Salvation Democratic Front, initiating the Somali rebellion.
SOURCE REVIEWED Wikipedia, 1978 Somali coup attempt open source ↗

Editorial Note

Date match to the 9 April 1978 coup attempt. Dataset codes it a dissident coup with leader unharmed, accurate for Barre. Well documented via Wikipedia and declassified CIA material. First Somalia record in the dataset run to reach this era; the attempt sparked the long insurgency against Barre.

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
52004091978
Albrecht/Koehler/Schutz (CAM) id
CAM-520-1978-04-09

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

Outcome and Target

Coup Atlas research identifies the target as: President Siad Barre crushed the April 1978 coup attempt and executed the ringleaders, remaining in power until 1991.

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.

Wikipedia

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.