If it's just pulling out of Syria, it's probably an okay call. However, Mattis leaving leads me to believe that we weren't quite done killing ISIS. I'm actually fine if we pull back to Iraq, and help defend the Kurds there. I always thought that chasing ISIS into Syria was mission creep, but understand they they needed to hunted down to the last fighter.
There was no way I would support the never ending mission in Syria. It's bad enough that we are doing that in Iraq and A-stan. I fully believe in the Mattis Doctrine. Kill them, and keep killing them until they get tired of the killing.
However, I go and point back to what I said on the afternoon of 9/11/2001. "The last time we went up against an enemy that was willing to commit suicide to kill Americans, we had to drop two nukes to get them to stop."