At first he claimed he was smarter than the generals, until he started hiring them as staff and had to face one of those famous Pentagon PowerPoint presentations designed to change the minds of presidents.  His mind is easy to change, especially if the Chief of Staff reinforces the point.  Hopefully the generals will run the occupation (the war was over quickly) and someone will negotiate our way out.  It won't be Trump.

Afghanistan was not just about revenge.  It was about trying to change their society in terms of how women are treated.  Lest we forget, the Taliban drove a modernizing country backwards.  A better way to help women is to give any woman or girl who wants to leave immediate US residency.  At some point, the men will start behaving themselves.

Than answer is border change, by the way.  Unite Afghan and Pakistani Pashtunistan, give the Uzbek and Tajik  areas to the neighboring countries and create Baluchistan from what is left.