Civil wars don't stop until one side surrenders. Personally? Are you going to put your a$$ on the line and go after them? It is easy to be a tough guy when you don't have to do the fighting.
Iran, Saudi, Turkey, all want to be the Master Ruler over the Caliphate rule....and they're all going for the gold which from their perspective is Syria.
The US simply wants an agreeable partner to further their Globalist agenda....Assad said no.....just like Mubarak, and Gaddafi said no.... We are in the business of regime change....and that is obvious to even the uninformed now.
P.S. Any time McCain shows his face it's a certainty.