Coup Atlas Research Database
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35012131967AttemptedPalace coup

Greece, 1967 — palace coup attempt

Greece (GRC)Southern Europe, EuropeDecember 13, 1967

Event Summary

On 13 December 1967 King Constantine II of Greece launched a counter-coup against the military junta of colonels that had seized power on 21 April 1967. After eight months as a powerless head of state who had reluctantly sworn in the colonels, Constantine flew with his family and Prime Minister Konstantinos Kollias to the northern city of Kavala, intending to rally loyal army and air force units, march on Thessaloniki, and set up a rival government whose international recognition would force the junta to resign. The plan was badly organized and had been infiltrated, and the loyalist commanders Constantine counted on were swiftly neutralized by the junta, which arrested his supporters and ridiculed the king.

Realizing the counter-coup had failed, Constantine flew into exile in Rome in the early hours of 14 December. He remained the nominal head of state from abroad until the junta abolished the monarchy in 1973, and he never reigned in Greece again.

Researched Details

Researched

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

Target identified in Coup Atlas research: King Constantine II failed and fled into exile; the colonels' junta retained power and later abolished the monarchy
RESEARCHED NAME
Key figures
Constantine II (king of Greece, coup instigator who fled)
George Papadopoulos (junta strongman)
Konstantinos Kollias (prime minister who fled with the king)

Sources

The King finally decided to launch his counter-coup on 13 December 1967 against the colonels who had seized power on 21 April 1967.
SOURCE REVIEWED Wikipedia, Greek junta open source ↗
Constantine flew to the northern city of Kavala hoping to be among loyal troops, with a vague plan to take control of Thessaloniki and install an alternative administration to force the junta to resign.
SOURCE REVIEWED Wikipedia, Greek junta open source ↗
Realising that the counter-coup had failed, Constantine fled Greece on board the royal plane with his family and Prime Minister Kollias, landing in Rome early in the morning of 14 December.
SOURCE REVIEWED European Royal History, December 13 1967 Counter Coup open source ↗
Constantine remained formally the head of state in exile until the junta abolished the monarchy on 1 June 1973.
SOURCE REVIEWED European Royal History, December 13 1967 Counter Coup open source ↗

Editorial Note

Date match, well documented. Dataset codes it a palace coup with leader fate fled the country and exiled, both exactly accurate. First Greece record in the dataset run; the successful April 1967 colonels' coup is a separate base event.

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
35012131967
Albrecht/Koehler/Schutz (CAM) id
CAM-350-1967-12-13-2

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

Outcome and Target

Coup Atlas research identifies the target as: King Constantine II failed and fled into exile; the colonels' junta retained power and later abolished the monarchy.

Baseline coding: Coup attempt failed to remove the incumbent. Recorded leader fate: remained in office; fled the country; exiled. 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

“The King Acts,” December 14, 1967
“Viceroy is Named,” by Sydney Gruson, December 14, 1967
“Military Coup in Greece Removes Papadopoulos,” by Alvin Shuster, November 26, 1973

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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