Operation Ajax Timeline By maxbay Jan 1, 1903 British Expedition Started Jan 1, 1908 British Find Oil in Iran Period: Jul 28, 1914 to Nov 11, 1918 World War I Dec 29, 1922 Soviet Union is Formed Period: Mar 4, 1933 to Apr 12, 1945 FDR's Presidency Period: Sep 1, 1939 to Sep 2, 1945 World War II Period: May 10, 1940 to May 23, 1945 Prime Minister Churchill's First term Sep 17, 1941 Reza Pahalvi is new Shah Period: Apr 12, 1945 to Jan 20, 1953 Truman's Presidency April 12, 1945 – January 20, 1953 Period: Jul 26, 1945 to Oct 26, 1951 Prime Minister Atlee First Term Oct 24, 1945 United Nations is Formed Period: May 12, 1947 to May 13, 1991 Cold War Nov 16, 1949 Shah meets with Truman in D.C. Nov 18, 1949 Mossadegh wins election Nov 25, 1950 Supplemental agreement persuasion speech Mar 3, 1951 Razmara makes speech against nationaliztion Mar 7, 1951 Razmara Assassinated Apr 30, 1951 Mossadegh fully nationalizes oil May 10, 1951 Celebrating Nationalization of oil Jul 15, 1951 Diplomat Averell Harriman arrives in Iran Oct 19, 1951 Mossadegh comes to U.S. Oct 20, 1951 United Nations British vs. Iran case begins Period: Oct 26, 1951 to Apr 6, 1955 Prime Minister Churchill's Second Term Jul 8, 1952 Rose Mary Intercepted by Navy in Abadan Coast Jul 16, 1952 Mossadegh collapses at Shah Pahlavi's Palace Jul 16, 1952 Mossadegh Resigns Oct 11, 1952 Prime minister severs diplomatic ties Period: Jan 20, 1953 to Jan 20, 1961 Eisenhower's Presidency Jul 19, 1953 Kermit Roosevelt arrives at US embassy in Tehran Aug 16, 1953 Attempted arrest of Riahi Aug 16, 1953 Failed arrest of Mossadegh