Call them what they are:

Newsweek

Pope calls in Christmas message for unity against militant atrocities

 

These are not militant but religious atrocities. ISIL are a religious faction who use religion martyrdom, we are right, you are wrong type thinking.  

They want a home state where they can live the way they want. They do not consider killing to be wrong, but rather their right of there beliefs. 

The only way to remove this thinking from the Muslims extremism is to remove there source of people to recruiter from.  This can be best accomplished by teaching reasoning, not blind following, aka removal or all religions by reasons. We need to teach the logical nonreligious solutions to all problems that religion solves. Rational evolution of we humans is the solution to all our problems today.

and just for your ISIL  edification today http://www.nydailynews.com/news/world/isis-terrorists-sanction-harvest-organs-rape-article-1.2476992

But what do I know?