Employment of chemical weapons gives political top cover for whoever wants to, to go kinetic all over Syria's ass.
Responsibility to protect will kick in, and all those
Patriots we want to send to Turkey for "missile defense," you know else they're really good at?
Shooting down jet aircraft. Say hello to Mr. No-Fly Zone.
Frankly, I'm far less concerned about Assad using chem against his own people than I am about that stuff getting into the hands of someone who will use it against Americans or our allies. IMO it would be better to go ahead and destroy all of it, wherever it is right now, whoever is controlling it. Why wait until he gasses a thousand people, or one of the jihadis over there gets his paws on it? I call this the, "nuke the site from orbit, it's the only way to be sure" approach.