Scandal involving the Republican Party polling data and secret twitter accounts. Well have the exclusive details. Hello, im jim sciutto in for wolf blitzer. An act of pure evil. Thats what president obama is calling the execution of american peter kassig at the hands of isis. Kassig is a former army ranger who went to syria to do humanitarian work. But the video showing kassigs death is different from the rest. We want to bring in our own brian todd. What are the major differences and it might surprise our viewers to learn that this is even more gruesome than what weve seen in the past. It really is, jim. A lot of very strong differences between this video and previous isis execution videos. We can tick through some of them now. For one, the victim, peter kassig, was not made to give a speech before his execution, at least not on this video. The victim is clearly not very clearly recognizable. You just see the head. There was no sign of him in an orange jump suit prior to being execute