US troops withdraw from Afghanistan

Nearly two years after President Barack Obama ordered 33,000 more U.S. troops to Afghanistan to tamp down the escalating Taliban violence, the last of those surge troops have left the country, U.S. officials said Sept. 20.

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BAGRAM, AFGHANISTAN - SEPTEMBER 11: American soldiers stand at attention during the an anniversary ceremony of the terrorist attacks on September 11, 2001 on September 11, 2011 at Bagram Air Field, Afghanistan. Ten years after the 9/11 attacks in the United States and after almost a decade war in Afghanistan, American soldiers paid their respects in a solemn observence of the tragic day. (Photo by John Moore/Getty Images)
BAGRAM, AFGHANISTAN - SEPTEMBER 11: American soldiers stand at attention during the an anniversary ceremony of the terrorist attacks on September 11, 2001 on September 11, 2011 at Bagram Air Field, Afghanistan. Ten years after the 9/11 attacks in the United States and after almost a decade war in Afghanistan, American soldiers paid their respects in a solemn observence of the tragic day. (Photo by John Moore/Getty Images)