>>18668066>afghanistanPetraeus became famous for Iraq first with the method being utilizing COIN.
The problem is COIN is a bitch to utilize after you've gone full retard and occupied a country with conventional military force and it's even harder to employ when you have the people at the top saying "Do pic related" and then you have a bunch of people through out the chain in positions of leadership who either refuse to utilize COIN in any respect or do it wrong.
The Taliban cannot win by any conventional means but that doesn't matter because this is an unconventional conflict and as long as they outlast the deadline any peace the US has bought will be undone.
The US military is great at winning the war and terrible at winning the peace.