The 1953 Iranian coup d’état was the U.S.- and British-instigated, Iranian army-led overthrow of the elected Prime Minister Mohammad Mosaddegh in favor of strengthening the monarchical rule of the shah, Mohammad Reza Pahlavi
Mosaddegh had sought to audit the documents of the Anglo-Iranian Oil Company (AIOC), a British corporation (now part of BP), to verify that AIOC was paying the contracted royalties to Iran, and to limit the company’s control over Iranian oil reserves.[