Wars are fought that are a net negative to the world and scratching out a win for even the victors in the long run is implausible as long as a minority that controls the levers of power stand to gain.

The troops aren't coming home because of trump. In the long run it was a fight that was never going to be "finished" and will to keep spending money indefinitely isn't there. As well blame the sunrise for clearing up your cold instead of your immune system.