April 29, 1951 (, Xin Mao on March 24), the implementation of the oil nationalization movement in Iran.

1951 15th the Iran National Assembly by the oil nationalization bill. On April 29, Iran nominated by both Houses of the radical leaders of the National Front, Muhammad - Prime Minister Mosaddeq. May 2, Mosaddeq government Iranian Oil nationalization bill. On May 26, British request the International Court of Arbitration oil nationalization dispute between it and Iran. 28 the same month, the Iranian government note to the British and the International Court of Justice, not entitled to recognize the International Court of Justice ruled that British and Iranian oil dispute. On July 5, the International Court of Justice in The Hague is still made by Iran's ruling is not conducive. September 12, the Iranian government issued an ultimatum to the British Government, and send troops to the occupation of Abadan city in the 27th, the British officers of the Anglo-Iranian Oil Company full withdrawal in October Abadan city.