CNN CNN International May 21, 2015 07:08:00
Acknowledging behind the scenes how serious the situation is, and are watching for signs of what may happen next. if iranian backed shia militias move in could there be a new sectarian bloodbath? will isis expand into shia areas beyond the traditional power base in sunni dominated regions. a u.s. intelligence official tells cnn itch isis were to expand beyond sunni areas in iraq, it would signal a more serious threat to baghdad. >> we need to take these people down and take these people down quickly. or they will dig in and we are never going to get them out. >> reporter: with air strikes cont...