The Crusades were Christians being stupid. If Bush had known even a little of history, ancient (the history of his religion) or more recent (The Crusades), he would have known to give the Middle East a wide berth. Instead, he plunged in.
He was an idiot, just like the Crusaders. Intelligent, educated Christians know about the Middle East because that's where their religion originated. Knowing about the Middle East, they also know it's is so fucked up it should be avoided at all costs.