Lets Get Real:
It would be a BAD idea for POTUS to increase US troops in Afghanistan, the place is a graveyard of Empires, in its day the British Empire mades losses, in the 20th Century the USSR invasion of Afghanistan was one of the reasons that it fell. The US should contract out any action to private companies, give them a simple job, make Afghanistan stable, and do what they have to win. The US main street will not be happy, they see billions being spent on Wars abroad while the structure of the US bridges and buildings is on the decline, it can be argued that one of the reasons that Trump won in 2016 was his policy of taking troops out of Afghanistan. One wonders what the US Congress will make of this move.