1953 Iranian coup d'état

On 19 August 1953, Prime Minister of Iran Mohammad Mosaddegh was overthrown in a coup d'état that strengthened the rule of Mohammad Reza Pahlavi, the Shah of Iran. In the months preceding the coup, Mosaddegh had consolidated power by orchestrating an unconstitutional referendum to dissolve parliament that was widely described as fraudulent, and he later refused to step down after the Shah exercised his constitutional authority to dismiss him as prime minister. It was instigated by the United Kingdom (MI6), under the name Operation Boot and the United States (CIA), under the name TP-AJAX Project or Operation Ajax. A key motive was to protect British oil interests in Iran after Mosaddegh nationalized the country's oil industry.