It's their twisted veiw of their religion , nothing more nothing less.
I couldn't say more about especially the US on this either.
You blame them so much and yet your country is equally fanatic when it comes to religious and especially military aspects and does things because you believe your beliefs are the right ones.
Same as all conservatives blames Obama for being a democrat or the rest blaming Bush because he is a conservative and so on.
You cannot expect me to take your words with a grain of salt and think you have more right than the Islamists.
Because you don't.
And the sooner this world destroys itself the better for me.