Wall Street Journal: “A decision by Iran to expand the war by targeting U.S. forces or assets would all but ensure a violent U.S. response that could drag out the fighting and raise the risk of the collapse of the regime.”Playbook: “The regime has been hammered by Israel and can hardly now afford an escalating conflict with the U.S. Equally, it will look ruinously weak if there is no response at all. And this is a regime that first and foremost must protect its own position.”