Coup Atlas Research Database
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81201311965AttemptedMilitary coup

Laos, 1965 — military coup attempt

Laos (LAO)Southeast Asia, AsiaJanuary 31, 1965

Event Summary

On 31 January 1965 two separate and simultaneous coups struck the Kingdom of Laos against the Royal Lao Government of Prime Minister Souvanna Phouma. General Phoumi Nosavan, the rightist strongman who had been stripped of troop command after earlier failed attempts, secretly assembled forces for a comeback, while Colonel Bounleut Saycocie independently mounted his own protest coup, briefly seizing the Vientiane radio station and infrastructure before his effort fizzled and his troops rejoined the government. General Kouprasith Abhay, the military region commander loyal to Souvanna Phouma, suppressed both risings.

He then turned on the national police force under Phoumi's protege Siho Lamphouthacoul, whom he distrusted, defeating and disbanding it in fighting that used artillery and improvised air strikes around Vientiane in early February. Both Phoumi and Siho ended their careers in exile in Thailand, removing the last serious rightist challenge to Souvanna Phouma's neutralist government.

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 survived; Phoumi Nosavan and Siho were defeated and driven into exile
RESEARCHED NAME
Key figures
Souvanna Phouma (prime minister of Laos, target)
Phoumi Nosavan (rightist general, coup leader)
Kouprasith Abhay (loyalist commander who crushed the coups)

Sources

The 1965 Laotian coups were two separate coups that struck the Kingdom of Laos at the same time, on 31 January 1965, one by General Phoumi Nosavan and one independently by Colonel Bounleut Saycocie.
SOURCE REVIEWED Wikipedia, 1965 Laotian coups open source ↗
General Kouprasith Abhay, the military region commander, suppressed both coups, then turned on the national police force and its commander Siho Lamphouthacoul, defeating and disbanding it.
SOURCE REVIEWED Wikipedia, 1965 Laotian coups open source ↗
Bounleut's action which began January 31 was a protest action mounted independently of the Phoumi Siho coup effort, and Phoumi, who had been secretly nurturing his comeback plans, saw in it an opportunity to precipitate his own.
SOURCE REVIEWED U.S. State Department, Office of the Historian open source ↗
Both Phoumi and Siho ended their careers in exile in Thailand after the coups were crushed.
SOURCE REVIEWED Wikipedia, 1965 Laotian coups open source ↗

Editorial Note

Date match, well documented. Dataset codes it a military coup and leader remained in office, both accurate. Part of the long series of Laotian coups involving Phoumi Nosavan; pairs with the Laos 1965-04-16 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
81201311965

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 survived; Phoumi Nosavan and Siho were defeated and driven into exile.

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

New York Times

“REVOLT REPORTED IN LAOTIAN TOWN Soldiers Backing an Ousted Rightist General Said to Take Over Thakhek REVOLT REPORTED IN LAOTIAN TOWN,” March 29, 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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