Senior Pentagon officials struggled on Wednesday not to contradict national security adviser John Bolton’s bellicose declaration this week that the U.S. won’t leave Syria until Iran does. Those officials are pushing ahead with the war’s original aim: defeating the so-called Islamic State. But while the goal of defeating ISIS is closer than ever, Bolton has pushed its end even further back. “I would disaggregate overall U.S. policy objectives from our military activities,” Robert Karem, the assistant secretary of defense for international security affairs, told a congressional panel on Wednesday. “We are not seeking war with Iran. … We are not...