1953: The CIA led coup that still shapes Iran | Turning Point

What Happened

In 1951, Iranian Prime Minister Mohammad Mosaddegh nationalised Iran's oil industry, terminating a five-decade British monopoly over Iranian petroleum resources. Two years later, in 1953, Mosaddegh was removed from power in a covert coup operation jointly orchestrated by the United States Central Intelligence Agency (CIA) and British intelligence services. The operation, known as Operation Ajax (CIA) and Operation Boot (MI6), reinstalled Mohammad Reza Shah Pahlavi as the dominant political authority in Iran, reversing the nationalisation and restoring Western access to Iranian oil under a consortium arrangement that replaced the Anglo-Iranian Oil Company's exclusive control.

Key Actors

Why It Matters

The 1953 coup fundamentally altered Iran's political trajectory and its relationship with the West, establishing a pattern of foreign intervention that continues to shape Iranian national identity and foreign policy. The overthrow of a democratically elected government and the subsequent consolidation of authoritarian rule under the Shah—backed by Western powers for oil access—fueled long-term resentment that contributed directly to the 1979 Islamic Revolution and the establishment of the Islamic Republic. The event remains a foundational grievance in Iranian political discourse, underpinning deep mistrust of U.S. and British intentions in the region, influencing Iran's pursuit of strategic autonomy, its nuclear programme, and its resistance to Western pressure. The coup's legacy is invoked by Iranian leadership to justify anti-Western policies and is a recurring reference point in negotiations over sanctions, regional influence, and security arrangements.

Watch For

Monitor how Iranian state media and political figures reference the 1953 coup during key diplomatic moments, particularly around anniversaries (August 19) or during nuclear negotiations, as historical framing often signals shifts in Tehran's negotiating posture or domestic political messaging. Watch for declassification or release of additional archival materials by U.S. or British governments, which periodically reignite public debate and can influence Iranian domestic politics or complicate bilateral diplomatic efforts. Observe whether regional actors—particularly in the context of U.S.-Iran tensions or Gulf security arrangements—invoke the coup precedent to argue for or against foreign intervention in Middle Eastern affairs, as this historical analogy shapes contemporary threat perceptions and alliance calculations.