You would have to go back a long way to explain it fully. And I think most people were unaware of the problem until the twin towers atrocity. I suppose, in a nutshell, the extreme IS think we are all 'infidels'. We can't negotiate with them. Even if we converted. As we are tainted. So they simply want to annihilate us (anyone not like them). Unlike most other situations, it would be better to negotiate (although Hitler would've been the same, he wanted to annihilate the Jews). But they go about their 'war' surreptitiously. Radicalising people who are either young and innocent, those with nothing to lose, already bear grudges, or drug addled. Easy targets. I too pray for peace. Who in their right mind would not want a peaceful world, where different cultures and religions can live together respecting each other. Sadly, with regard to them, we cannot.