Iraqi forces could begin to try to retake Baghdad as soon as possible , a U.S. official said . That way , when the military operation begins , ISIS will be isolated inside Mosul and unable to reinforce its fighters . ISIS is continuing to try to reinforce its stronghold of Mosul .
Iraqi forces could begin to try to retake Baghdad as soon as possible , a U.S. official said . ISIS is continuing to try to reinforce its stronghold of Mosul .