accused of using jihadi proxy themselves. many countries are now concerned that the turkish invasion ends in northern syria and is helping fuel a resurgence of isis and we are starting to see more attacks by the sleeper cells there. >> bret: benjamin, you're just back from northeastern syria. isis is still carrying out attacks in syria? >> yes, absolutely. there are a few thousand isis fighters who weren't captured after the fall, and there are thousands more who support the ideology. that's one of the reasons why the u.s. is keeping an estimated 600 troops in northern syria and earlier today the chairman of the joint chiefs spoke about this. >> there are still isis fighters in the region and unless pressure is maintained and attention is maintained on that group then there's a very real possibility that it could be set for reemergence devices. >> and indeed just today we saw more attacks, one car bomb and one motorcycle bomb that blew up near a school and several