Well it isn't surprising to see Trump flip-flopping on another campaign promise.  However, it is heartening to see he's flip-flopping with information for once.  Though seeing how his decision was dominated by going to Camp David with three generals and only one non-military voice in the room (and an arguably weak one at that) it is perhaps a concern that Trump got stuck into an echo chamber.  I guess we'll hear more over the coming days from non-military men but Trump isn't one known to go against a decision once its made.