right-hand man. he was very feared. as he was leading this group, it was never quite clear what his role was. he was more of a spiritual leader rather than operationally on the ground all the time. so it's not clear what will happen next if there is somebody who could replace him in the baathist circles. it's also not clear who he was allied with at this point. once upon a time it may have been isis but as recently as last week there were reports of an audio message from him calling for strikes against isis. so again, shifting world of allegiances across syria and iraq. >> isis is trying to reestablish reestablish. thank you for your fine reporting on this. still to come new allegations that iran is ramping up cyberattacks on the west even during those u.s. led nuclear talks. we're going to speak with one of the authors of that report.