Removing all of the troops and their equipment in the next three weeks — along with coalition partners who can't get out on their own — would be difficult logistically.
The Taliban's propaganda arm is churning out a steady stream of social media messages and videos, and publishing reports on a slick website depicting themselves as good governors.
The United States first intervened in Afghanistan following the September 11, 2001 attacks and dislodged the Taliban regime, which had welcomed Al-Qaeda.