U.S. military official says there is a plan to retake Pershmerga from CNN . Mosul would be attacked by Sunni and Mosul forces , officials said . It 's unclear how long such an operation would take to be successful . Pershmerga would only provide air support , no ground troops are planned , official said . ISIS issues new propaganda video showing peaceful scenes in Mosul .
U.S. military official says there is a plan to retake Pershmerga from CNN . Mosul would be attacked by Sunni and Mosul forces , officials said . Pershmerga would only provide air support , no ground troops are planned , official said . ISIS issues new propaganda video showing peaceful scenes in Mosul .