I can see absolutely no benefit to the United States from any other outcome than eliminating the Syrian "rebels," who are nothing but a bunch of AQ, ISIS, and MB terrorists who want to destroy us. I haven't seen Assad try to blow up our airplanes, our mass transit, and send or encourage individual terrorists here to massacre Americans. He's nothing but a traditional Islamic tyrant who simply wants to maintain his own position. We should let him stay.
Assad shows about as much enthusiasm for terrorism as Graham, Rubio, and Jeb show for protecting our borders and repealing Obamacare: occasional lip service to placate the public, but that's about as far as they go.