Even if ISIS territory is reclaimed, is U.S. leaving job "halfway" done? President Trump says he expects to announce the final defeat of ISIS' so-called "caliphate" within the next week. In late 2014, ISIS held major cities throughout Iraq and Syria. U.S. officials now say the group has lost more than 99 percent of that territory. Charlie D'Agata went close to the last piece of ISIS-controlled land and saw the combat first hand.