No, they believe in what a fat guy said to them that the book says. If they would read the book they would understand that the only reason for war is to defend themselves or reclaim land that was taken. Also the main jihad is about controlling yourself and resisting sons such as hate, greed ect'. This only shows that they are not real Muslims but a bunch of assholes who never bothered to read the book. Also jihad was added much later after the book and don't consider as a main part of it
Don't blame Muhammad though, even though Christians are all about forgiveness and stuff they hate the Jews till this day and responsible for massive part of all the death on Earth.
In case of the islam, yes. If a book teaches people to hate and/or kill others (because they're infidel and/or gay), it's the direct cause of what's happening right now. (and what happened in the past).
They fear the concequenses of leaving it, Zoom. So either they pretend to believe or they close their eyes on people who follow their religions guidelines. And Assassin, I know some christians, and they never said a bad word about Jews (unlike muslims, who wish them dead, openly..). I'm blaming muhammad for being a warlord that keeps influating people with his book of hate up to this day.
Quickly jump in to conclusions? Tell me how it was not an terrorist attack when 3 men randomly started stabbing innocent people while screaming "allahu akbar".