trying to find new ways to pressure the militant group. cnn s barbara starr looks at the u.n. s options and obstacles in this region. reporter: american f-16s at anytime could begin to strike isis from their base here at incirlik turkey. some strikes may be aimed at the tushish-syrian border where isis forces just moved in after al qaeda left. strikes will try to pave the way for putting u.s. trade, moderate rebels back in to syria after their unit was decimated in an attack. this has been a difficult process, to vet these people, train them and get them back in to what is a fluid, dynamic situation. reporter: the pentagoning trying to figure out how to salvage the training effort. 70 additional rebels may finish training in the next few weeks. we need to find a group
difficult because it doesn t have the same appeal as isis or al qaeda does they are a member of the al qaeda family. we have better security and intelligence and better policing than in kenya so it is harder to do. but let s think about the ease of access to guns and materials for bombs in the united states. it not that difficult to get ahold of either. and you could do it. i think that not everyone has their guard up. and if you go after smaller targets and smaller cities it is all the easier for someone to perpetrate. tom, you just returned from the tushish-syrian border one of the strange things about this threat turkey has the situation right there on their doorstep and what did you find? i found out that turkey and those on the nusra front continue to use turkey as a