Negotiated settlement in Syria

You hear 'em talking about it.  But it won't work.  Assad knows that he has to win, or he is dead.  Just like Hosni Mubarak, Saddam Hussein, Moammar Qaddafi, all dead.  In a spot that that, is a man likely to cut a deal with his enemies?  He might, maybe, go along with giving up his poison gas, but he isn't going share power with Al Quada.