FILE - In this July 7, 2012, file photo, Secretary of State 

FILE - In this July 7, 2012, file photo, Secretary of State Hillary Rodham Clinton, right, greets troops before departing Kabul International Airport. U.S. troop deaths in Afghanistan have plunged to the lowest level in four years, reflecting a pullback from direct combat into the less deadly role of advising and assisting Afghan forces as they do more of the fighting. Attacks by the Taliban insurgents also have been declining, although the war is far from finished. (AP Photo/Brendan Smialowski, File, Pool)
Associated Press
FILE - In this July 7, 2012, file photo, Secretary of State Hillary Rodham Clinton, right, greets troops before departing Kabul International Airport. U.S. troop deaths in Afghanistan have plunged to the lowest level in four years, reflecting a pullback from direct combat into the less deadly role of advising and assisting Afghan forces as they do more of the fighting. Attacks by the Taliban insurgents also have been declining, although the war is far from finished. (AP Photo/Brendan Smialowski, File, Pool)
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