DEFINITELY STAY TUNED: Turkey says it will definitely take over fight against ISIS when U.S. leaves. Understand I regard Erdogan as a bad actor. However, he’s a bad actor who understands where his best interests really lie. They do not lie with Moscow, Tehran and Beijing. That said, Syria will test this opinion. One other point: I’m still not sure what constitutes U.S. withdrawal from Syria. Potent U.S. and French forces are positioned in Iraq — within tactically reasonable strike distance.