What seems a bit strange to me is their their selective anger when it comes to attacking mosques. If a coalition plane or tank were to hit a mosque, the entire islamic world would be enraged, and we'd see the usual yelling, shooting in the air, and flagburning rituals we've seen so many times before. But now two mainstream islamic factions have an arguement with eachother, suddenly the mosques aren't that holy and sacred to them anymore.