A contingent of roughly 650 U.S. troops will remain in Afghanistan to protect diplomats after the Pentagon completes its overall withdrawal of military forces from the country, a U.S. defense official confirmed to Fox News on Thursday.

A contingent of roughly 650 U.S. troops will remain in Afghanistan to protect diplomats after the Pentagon completes its overall withdrawal of military forces from the country, a U.S. defense official confirmed to Fox News on Thursday.