>> reporter: yeah, just more atrocities, isn't it, george. more of isis' brutality controlling the population through fear. those 232 men, that was near mosul. we also heard from our own sources inside mosul of a particularly gruesome execution of 20 men accused of being spies. they were taken to mosul university, they were tied together and all electelectrocu their bodies left lying in the street as a warning to others. this fear tactic increasing inside of massively. people have been asked to move into the city, for example, tens of thousands of civilians being forced in from the outskirts of mosul into the city as human shields. and if they refuse to go, being shot on the spot. you know, this all sort of adding to this -- almost a million, million and a half civilians there. so these others being brought in just to add to the