In 1953, Iran experienced a foreign-backed coup that overthrew its prime minister and reshaped the country’s politics for decades. The event centered on Prime Minister Mohammad Mosaddegh, his move to nationalize Iran’s oil, and a covert operation by the United States and the United Kingdom to remove him and strengthen the powers of the shah.

Quick Scoop

In 1951, Mohammad Mosaddegh became prime minister and pushed to nationalize the Anglo-Iranian Oil Company, challenging British control over Iran’s oil revenues. This move led to a severe standoff with Britain, including sanctions and efforts to isolate Iran economically.

By early 1953, officials in Washington and London feared both the loss of oil interests and the possibility that Iran might drift closer to the Soviet Union during the Cold War. They agreed on a covert plan—known as Operation Ajax (U.S.) and Operation Boot (U.K.)—to remove Mosaddegh.

What Actually Happened

  • In August 1953, the shah signed decrees dismissing Mosaddegh and appointing General Fazlollah Zahedi as prime minister, under pressure and planning from U.S. and British intelligence.
  • After an initial failed attempt, organized street protests, paid mobs, and elements of the army turned against Mosaddegh, producing violent clashes and many deaths in Tehran.
  • On 19 August 1953, Mosaddegh’s government collapsed; he was later tried for treason, imprisoned, and then kept under house arrest for the rest of his life.

Why It Mattered for Iran

The coup restored and greatly strengthened the rule of Shah Mohammad Reza Pahlavi, turning him into an increasingly authoritarian monarch backed by the United States. Over the next decades, his regime relied on security forces and repression to maintain control, while Western influence in Iran—especially American—expanded.

Many historians see 1953 as a turning point that crushed a major democratic and nationalist experiment and deepened Iranian resentment toward foreign intervention. The memory of the coup fed into the anti-Western mood that later helped fuel the 1979 Iranian Revolution against the shah.

How People Debate It Today

  • Some commentators emphasize Mosaddegh’s constitutional overreach and internal political tensions, arguing that Iran’s system was already unstable and might have faced upheaval even without foreign intervention.
  • Others stress that whatever Mosaddegh’s flaws, external regime change to protect foreign oil interests and geopolitical aims cannot be justified and damaged Iran’s democratic trajectory.

Across public discussions and forums, the 1953 coup remains a symbol of foreign interference in Iran and a reference point in debates about U.S. and U.K. policy in the Middle East.

Information gathered from public forums or data available on the internet and portrayed here.