What would Jesus do about ISIS?

Muslims consider Jesus to be a prophet and so would (hopefully) listen to him.
Jesus wasn't really a doer, he talked a lot and hoped to get the best out of people, in this case he might find that isn't effective.
ISIS claim to be founded on Islam, however anyone (including atheists like me) can see that Islam means peace and the Koran and Mohammed both say that killing is wrong in all situations. These people are animals who use this "cause" as an excuse for insane bloodletting and the murder of fellow Muslims and Faffir alike.
Jesus beware!