AdvertisementGen. Martin Dempsey On Iraq: A Fight That Will Take 'Multiple Years'June 03, 2015NPR StafffacebookEmailJoint Chiefs Chairman Gen. Martin Dempsey speaks during the graduation ceremony at the U.S. Military Academy at West Point, N.Y., on May 23. In an interview with NPR, he says he's not surprised by the slow going against the Islamic State, predicting it will be a "long campaign." (AP)