Religion is tribalism at it's base level.
Human's are territorial and something needs to bind them.
That binding process can be anything; skin colour, location, religion, thought process; those who lots versus those who have not much, language and even something as basic as the colour of a football shirt in a friendly competition. Anything goes. That's how survival is coded in to our DNA. Beat anything that is different to a pulp if survival is endangered. Pure physical mechanics. Flags to human beings are what red rags are to bulls.
People want to believe their religion is the peaceful one when all it is, is just another instrument for differentiating humans. Kill all pagans, blasphemers and burn witches.
And so the wheel of life turns.
As for terrorists, they are sponsored by us all in kind.
Our officials and diplomats are terrorists but they aren't perceived that way. It's called the business of intelligence. Manipulate governments to our national interest. They say "look here, if we didn't do this sort of thing someone else surely will".
Margaret Thatcher's son was a confirmed terrorist but who would stand up to say so? BBC coins a different phrase. It was a coup d'état attempt.
Goes into another country Equatorial Guinea to replace one President with another to gain preferential rights to vast oil and gas reserves
. He was using mercenaries to over throw an elected government. Does he have to blow up and kill people to be considered a terrorist? Why does anyone need armed mercenaries to execute a business deal. Nicely glossed over.
Anyhow, problem here was he got too close and caught in the chain. Way to approach this sort of thing is to have many people in the middle who control and handle unpalatable aspects of conducting this sort business for you. So people at the top are squeaky clean but even more so like Bliar who is named as the "uniter of the faiths"... What a freaking joke is that?
I doubt there is anything in the World that can not be resolved by the free market pricing mechanism but tilting the tables to ones unfair advantage will always take place.
Calling it terrorism suits the agenda of those people who stand to gain. Right now that is all of us in terms of cheaper oil and gas.
Defence and intelligence industries need money and a common enemy. That used to be communism and guerrillas and now it's terrorists.
More innocent people have been killed in the US by slack gun control and even the police than by terrorists and if one looks at money spent per life it speaks volumes.
One wouldn't spend billions on a production line where the marginal return on investment was $0.0000000000001 would they?
In summary, remember ISIS was forged by the West to destabilize Syria. They are working for Western & sunni interests. I do not believe the disinformation and deception that is spread as if we are the good guys.
It's just business but not in a free perfectly competitive and democratic world as we know it or like to declare so. More of a world we choose to create because it suits our nature and how we conduct business.