Coup Atlas Research Database
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81204161965AttemptedDissident coup

Laos, 1965 — dissident coup attempt

Laos (LAO)Southeast Asia, AsiaApril 16, 1965

Event Summary

The dataset records an event coded as an attempted dissident coup in Laos on 16 April 1965, part of the aftershocks of the failed January 1965 coups against the Royal Lao Government of Prime Minister Souvanna Phouma. After General Kouprasith Abhay crushed the risings of Phoumi Nosavan and the police force of Siho Lamphouthacoul in early February, remnants of the defeated rightist coup troops continued to pose a threat. An insurrection was threatened at Thakhek on 26 March 1965 but was quelled bloodlessly, and about three weeks later the defeated coup troops once again threatened to stage a coup.

Kouprasith sent a regiment to overcome the mutinous battalion; about two thirds of its troops deserted and its commanding officer was executed. These final convulsions ended the rightist military challenge to Souvanna Phouma, whose neutralist coalition government continued amid the widening Laotian Civil War until the communist Pathet Lao takeover in 1975.

Researched Details

Researched

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

Target identified in Coup Atlas research: Prime Minister Souvanna Phouma's government suppressed the final coup remnants and remained in power
RESEARCHED NAME
Key figures
Souvanna Phouma (prime minister of Laos, target)
Defeated rightist coup troops (rebels)
Kouprasith Abhay (loyalist commander)

Sources

An insurrection was threatened in Thakhek on 26 March 1965 but was quelled bloodlessly, and three weeks later Phoumi's defeated coup troops once again threatened to stage a coup.
SOURCE REVIEWED Wikipedia, 1965 Laotian coups open source ↗
Kouprasith sent a regiment to overcome the mutinous battalion, about two thirds of its troops deserted, and its commanding officer was executed.
SOURCE REVIEWED Wikipedia, 1965 Laotian coups open source ↗
The January 1965 coups by Phoumi Nosavan and the police force under Siho were suppressed by General Kouprasith Abhay, who then defeated and disbanded the police force.
SOURCE REVIEWED Wikipedia, 1965 Laotian coups open source ↗
Both Phoumi and Siho ended their careers in exile in Thailand after the risings were crushed, ending the rightist challenge to Souvanna Phouma.
SOURCE REVIEWED Wikipedia, 1965 Laotian coups open source ↗

Editorial Note

Dataset date 16 April 1965 corresponds to the mid-April flare up by the defeated coup troops described in the 1965 Laotian coups account, roughly three weeks after the 26 March Thakhek insurrection; the precise date is lightly pinned in accessible English sources this session, so the exact day is flagged, while the event and its suppression are verified. Directly follows the Laos 1965-01-31 record 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
81204161965

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

Outcome and Target

Coup Atlas research identifies the target as: Prime Minister Souvanna Phouma's government suppressed the final coup remnants and remained in power.

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

Powell and Thyne

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

New York Times

“DISSIDENTS IN LAOS REPORTED MASSING,” April 18, 1965

Arizona Republic

“Lao Army Cuts Off Rebel Escape Route,” April 22, 1965

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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