Friday was Hillary Clinton's last day in her position as U.S. Secretary of State.
Hillary Clinton's tenure as Secretary of State
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Afghan President Hamid Karzai, Clinton, and other foreign ministers pose for a group photo after the Kabul International Conference at the Foreign Ministry in Kabul, Afghanistan, July 20, 2010.
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Clinton pauses to put on lipstick while talking with Turkey's President Abdullah Gul (R) at the start of a United Nations Security Council meeting at the U.N. headquarters in New York, September 23, 2010.
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President Barack Obama and Secretary Clinton walk together off stage at a holiday reception for diplomats at the State Department in Washington, December 13, 2010.
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Clinton checks her PDA upon her departure in a military C-17 plane from Malta bound for Tripoli, Libya October 18, 2011.