fighters. ben wiedeman is live in eastern syria watching this and has the breaking details for us. what's happening, ben? >> reporter: alisyn, it's important to underscore these people aren't fleeing, they are surrendering. these are isis families and isis fighters who have come to the conclusion that the battle cannot be won given the intensity of the bombardment that's been going on for some time. this bombardment, it appears, has resulted in a very large number of casualties among men and women and children. i must stress the women and children as well. we were able to shoot some video of some children who were badly injured. they are being treated by a group called the free burma rangers which is an american-led group that we saw also operating around mosul and raqqa as well.