vulnerable to air power. this was supposed to be the easy part. you saw there it really wasn't. meant to push forward today, five or six kilometers behind me taken by the peshmerga and going through other villages in the flat, open plains. yes, heard from a senior peshmerga official, his belief, could take as long as two months. possibly see us somewhere into next year. maybe even a new u.s. president before we see this wrapping up and haven't gotten to mosul. 1.2 million, possibly human shields, possibly caught in the cross fire, thought to be pushed by isis, mostly to the west of the city across the tigris river. the more dense area. a difficult fight if all trapped in there, caught up in the violence. wolf? >> presumably saying fight to the death as opposed to simply giving up. barbara, what are you learning about the u.s. military role in this operation? >> reporter: wolf, what you have a 100-plus, maybe as much as