The Islamic State (IS) is highly motivated by a political religion.
And the IS recruits from across the world, from Europe, to Australia, from the Middle East to Indonesia, and beyond.
And IS makes brilliant use of social media.
And the believers in the IS die for their belief.
IS understands our strength is in physical force and our weakness is our psychology. So IS terrorism is squarely directed at our psychology.
How interesting we don't know what to do.