1953 Iranian coup d'état

E117749

Cold War event coup d'état political event

The 1953 Iranian coup d'état was a CIA- and MI6-backed overthrow of Prime Minister Mohammad Mossadegh that strengthened Shah Mohammad Reza Pahlavi’s authoritarian rule and reshaped Iran’s political trajectory.

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All labels observed (4)

Label	Occurrences
1953 Iranian coup d'état canonical	4
1953 Iranian coup d’état	4
28 Mordad coup	1
Anglo-Iranian oil nationalization crisis	1

How this entity was disambiguated

This entity first appeared as the object of triple T986744 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: 1953 Iranian coup d'état
Context triple: [Mohammad Reza Pahlavi, notableEvent, 1953 Iranian coup d'état]

A. Iranian Revolution
The Iranian Revolution was a 1979 popular uprising that overthrew the Pahlavi monarchy and established the Islamic Republic under Ayatollah Khomeini.
B. 1958 Iraqi coup d'état
The 1958 Iraqi coup d'état was a military overthrow that ended the Hashemite monarchy in Iraq and established a republic, dramatically reshaping the country's political landscape.
C. Egyptian revolution of 1952
The Egyptian revolution of 1952 was a military-led uprising that overthrew King Farouk, ended the monarchy, and paved the way for the establishment of a republic and the rise of leaders like Gamal Abdel Nasser.
D. May Coup of 1926
The May Coup of 1926 was a military takeover led by Józef Piłsudski that overthrew Poland’s democratic government and ushered in the authoritarian Sanation regime in the Second Polish Republic.
E. Iranian Embassy siege
The Iranian Embassy siege was a 1980 hostage crisis in London that ended with a high-profile counterterrorism assault by the British Special Air Service (SAS), broadcast live on television.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: 1953 Iranian coup d'état
Target entity description: The 1953 Iranian coup d'état was a CIA- and MI6-backed overthrow of Prime Minister Mohammad Mossadegh that strengthened Shah Mohammad Reza Pahlavi’s authoritarian rule and reshaped Iran’s political trajectory.

A. Iranian Revolution
The Iranian Revolution was a 1979 popular uprising that overthrew the Pahlavi monarchy and established the Islamic Republic under Ayatollah Khomeini.
B. 1958 Iraqi coup d'état
The 1958 Iraqi coup d'état was a military overthrow that ended the Hashemite monarchy in Iraq and established a republic, dramatically reshaping the country's political landscape.
C. Egyptian revolution of 1952
The Egyptian revolution of 1952 was a military-led uprising that overthrew King Farouk, ended the monarchy, and paved the way for the establishment of a republic and the rise of leaders like Gamal Abdel Nasser.
D. May Coup of 1926
The May Coup of 1926 was a military takeover led by Józef Piłsudski that overthrew Poland’s democratic government and ushered in the authoritarian Sanation regime in the Second Polish Republic.
E. Iranian Embassy siege
The Iranian Embassy siege was a 1980 hostage crisis in London that ended with a high-profile counterterrorism assault by the British Special Air Service (SAS), broadcast live on television.
F. None of above. chosen

Statements (52)

Predicate	Object
instanceOf	Cold War event ⓘ coup d'état ⓘ political event ⓘ
alsoKnownAs	28 Mordad coup ⓘ linked to: 1953 Iranian coup d'état Operation Ajax ⓘ Operation TPAJAX ⓘ
country	Iran ⓘ
documentedIn	U.S. State Department Foreign Relations of the United States volumes ⓘ linked to: Foreign Relations of the United States series declassified CIA documents released in 2013 ⓘ
endDate	1953-08-19 ⓘ
followedBy	General Fazlollah Zahedi premiership ⓘ Zaher-ol-Eslaami government ⓘ
hasKeyFigure	Allen Dulles ⓘ Donald Wilber ⓘ Dwight D. Eisenhower ⓘ Fazlollah Zahedi ⓘ Kermit Roosevelt Jr. ⓘ linked to: Kermit Roosevelt Winston Churchill ⓘ
hasParticipant	Central Intelligence Agency ⓘ Iranian military ⓘ linked to: Armed Forces of the Islamic Republic of Iran Mohammad Mossadegh ⓘ Mohammad Reza Pahlavi ⓘ National Front (Iran) ⓘ linked to: National Front of Iran Secret Intelligence Service ⓘ Tudeh Party of Iran ⓘ United Kingdom ⓘ United States ⓘ linked to: United States of America royalist forces ⓘ
impact	contributed to conditions leading to the 1979 Iranian Revolution ⓘ reshaped Iran's political trajectory ⓘ
legalStatus	widely regarded as foreign intervention in Iranian sovereignty ⓘ
location	Tehran ⓘ
motive	containment of perceived communist influence ⓘ protection of Western oil interests in Iran ⓘ removal of a nationalist government hostile to British oil control ⓘ
organizedBy	Central Intelligence Agency ⓘ Secret Intelligence Service ⓘ
precededBy	Abadan Crisis ⓘ nationalization of the Anglo-Iranian Oil Company ⓘ
result	consolidation of authoritarian monarchy in Iran ⓘ expansion of SAVAK ⓘ formation of a Western-aligned Iranian government ⓘ long-term anti-American sentiment in Iran ⓘ overthrow of Mohammad Mossadegh ⓘ restoration of Shah's full executive power ⓘ reversal of some oil nationalization policies ⓘ strengthening of Mohammad Reza Pahlavi's rule ⓘ suppression of opposition parties ⓘ
startDate	1953-08-15 ⓘ
supportedBy	British government ⓘ linked to: UK government United States government ⓘ
target	Mohammad Mossadegh ⓘ

How these facts were elicited