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February 1953: Mohammed Reza Pahlavi, Shah of Iran, with his wife Soraya, Queen of Persia and daughter Princess Shahnaz at the airport at Tehran, bound for Switzerland. The Shah left Persia for an indefinite period during which a Regency Council governed the country. (Photo by Keystone/Getty Images)

February 1953:  Mohammed Reza Pahlavi, Shah of Iran, with his wife Soraya, Queen of Persia and daughter Princess Shahnaz at the airport at Tehran, bound for Switzerland.  The Shah left Persia for an indefinite period during which a Regency Council governed the country.  (Photo by Keystone/Getty Images)

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EGYPT - JULY 26: The Egyptian President Gamal Abdel NASSER announcing the nationalization of the Suez Canal to a crowd of 250,000 people during a celebration of the 4th anniversary of the July 26, 1956 revolution. He also announced that the property of the Universal Suez Canal Company would be sequestrated. (Photo by Keystone-France/Gamma-Keystone via Getty Images)

EGYPT - JULY 26:  The Egyptian President Gamal Abdel NASSER announcing the nationalization of the Suez Canal to a crowd of 250,000 people during a celebration of the 4th anniversary of the July 26, 1956 revolution. He also announced that the property of the Universal Suez Canal Company would be sequestrated.  (Photo by Keystone-France/Gamma-Keystone via Getty Images)

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May 1950: A meeting of the foreign ministers of the North Atlantic Treaty Organisation NATO at Lancaster House. All are sitting around a large conference table with aides and press standing behind them. (Photo by Hulton Archive/Getty Images)

May 1950:  A meeting of the foreign ministers of the North Atlantic Treaty Organisation NATO at Lancaster House. All are sitting around a large conference table with aides and press standing behind them.  (Photo by Hulton Archive/Getty Images)

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War and Conflict, Politics, Coups/Guatemala, pic: circa 1950, President Jacobo Arbenz pictured with his wife, President Arbenz was removed as Guatemala's President by a CIA, backed coup in 1954 (Photo by Rolls Press/Popperfoto via Getty Images/Getty Images)

War and Conflict, Politics, Coups/Guatemala, pic: circa 1950, President Jacobo Arbenz pictured with his wife, President Arbenz was removed as Guatemala's President by a CIA, backed coup in 1954  (Photo by Rolls Press/Popperfoto via Getty Images/Getty Images)