taking verses out of the old testament that are primeal. >> they are trying to do things that you might find in the old testament of the bible but in this case the practices of war, of early islam that most muslims have found ways to practice their religion out these things but isis wants to show they are reviving even the most grotesque practices. >> explain what tuck theory is. >> historically in islam there's a reluctance to say because over people who call themselves muslims are doing things you disagree with they are not muslims. isis has no problem saying that about a wide range of muslims. >> if i am a muslim and you are a muslim and i say you are not doing it right. >> you put yourself at risk. if you say i'm not a muslim and i say i am. if you are wrong you actually