Secretary of State Hillary Rodham Clinton and Defense Secretary Leon Panetta arrive for an event at the National Defense University in Washington, Tuesday, Aug. 16, 2011. (AP Photo/Susan Walsh)

Associated Press
Secretary of State Hillary Rodham Clinton and Defense Secretary Leon Panetta arrive for an event at the National Defense University in Washington, Tuesday, Aug. 16, 2011. (AP Photo/Susan Walsh)
Secretary of State Hillary Rodham Clinton and Defense Secretary Leon Panetta arrive for an event at the National Defense University in Washington, Tuesday, Aug. 16, 2011. (AP Photo/Susan Walsh)
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