Thursday, June 19, 2025

History of American interventions in Iran

The history of American interventions in Iran is marked by a series of significant events that have shaped the complex and often contentious relationship between the two nations. These interventions, primarily driven by geopolitical and economic interests, span from the mid-20th century to more recent decades.

The 1953 Coup and Operation Ajax

The most pivotal American intervention in Iran occurred in 1953 with the overthrow of Prime Minister Mohammad Mosaddegh. Mosaddegh, a democratically elected leader, had nationalized the Anglo-Iranian Oil Company (AIOC), threatening British oil interests and raising fears of communist influence during the Cold War. The United States, under the Eisenhower administration, collaborated with the United Kingdom to orchestrate a coup, codenamed Operation Ajax (or TP-AJAX Project) by the CIA and Operation Boot by British intelligence. The operation, initially faltering, succeeded on August 19, 1953, after a second attempt, leading to Mosaddegh's arrest and the restoration of power to Shah Mohammad Reza Pahlavi, a Western-friendly monarch[1][2]. The CIA played a central role, funding pro-Shah riots, bribing key figures, and using propaganda to destabilize Mosaddegh’s government, with costs estimated between $100,000 and $20 million[2][3]. Post-coup, the U.S. secured significant control over Iran’s oil industry through the 1954 Consortium Agreement, granting American and other Western companies 40% ownership for 25 years[1][4]. The Shah, heavily reliant on U.S. support, ruled autocratically until his overthrow in 1979, a period during which the U.S. also helped establish the notorious SAVAK security forces to maintain his grip on power[2].

Nuclear Cooperation and Support for the Shah

In the decades following the coup, the United States deepened its ties with Iran under the Shah through initiatives like the Atoms for Peace program. Launched in the 1950s under President Dwight D. Eisenhower, this agreement facilitated nuclear education and technology transfer to Iran, including providing a reactor and weapons-grade enriched uranium. This collaboration laid the groundwork for Iran’s nuclear program and continued until the 1979 Iranian Revolution severed these ties[1]. During this period, the U.S. consistently supported the Shah, even as his regime grew increasingly unpopular among Iranians, viewing him as a bulwark against communism and a key ally in the Middle East[1][5].

Iran-Contra Affair in the 1980s

Another notable intervention came during the 1980s with the Iran-Contra Affair under the Reagan administration. Despite an arms embargo on Iran amid the Iran-Iraq War, senior U.S. officials secretly sold weapons to Iran in exchange for the release of American hostages held by Hezbollah in Lebanon. The proceeds from these illegal sales were diverted to fund the Contras, a right-wing rebel group in Nicaragua, bypassing Congressional restrictions. Although President Reagan took responsibility for the scandal in a 1987 address, the affair resulted in convictions for some officials and further strained U.S.-Iran relations, highlighting the covert nature of American involvement[1].

Military Engagements and Regional Dynamics

The U.S. also intervened militarily in the region, impacting Iran indirectly and directly. In 1988, during Operation Praying Mantis, the U.S. Navy retaliated against Iran after an Iranian mine nearly sank an American frigate in the Strait of Hormuz. American forces destroyed Iranian oil platforms and sank a frigate. Tragically, in July 1988, the U.S. Navy mistakenly shot down an Iranian passenger jet, mistaking it for a fighter jet, killing all 290 people on board[1]. Additionally, during the 1980-1988 Iran-Iraq War, the U.S. played a dual role by indirectly supporting both sides to prolong the conflict and weaken both nations. The U.S. opposed UN resolutions condemning Iraq’s invasion, removed Iraq from its list of terrorism-supporting nations, facilitated arms transfers to Saddam Hussein, and secretly provided arms to Iran starting in 1985, despite public antagonism toward both countries[5].

Legacy and Acknowledgment

The 1953 coup remains a defining moment in U.S.-Iran relations, with long-lasting consequences for Iranian democracy and bilateral trust. In 2013, the CIA publicly admitted its role in the coup, releasing declassified documents confirming it was carried out under U.S. direction as an act of foreign policy approved at the highest levels of government[2][3]. Despite expressions of regret, the U.S. has not issued an official apology for its involvement[2]. These interventions, rooted in Cold War strategies and economic interests, have contributed to enduring tensions between the United States and Iran, shaping a relationship marked by suspicion and conflict over the past seven decades[1][6].


  • https://www.cfr.org/timeline/us-relations-iran-1953-2025       
  • https://en.wikipedia.org/wiki/1953_Iranian_coup_d'%C3%A9tat     
  • https://www.npr.org/2019/01/31/690363402/how-the-cia-overthrew-irans-democracy-in-four-days  
  • https://harvardpolitics.com/intervention-in-iran/ 
  • https://www.socialistalternative.org/no-to-bushs-war-on-iraq/a-brief-history-of-us-interventions-in-the-middle-east-1949-2002/  
  • https://www.amu.apus.edu/area-of-study/legal-studies/resources/us-iran-relations/ 

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