The Muslim world has youth, numbers and global ambitions. The West is growing old and enfeebled, and lacks the will to rebuff those who would supplant it. It's the end of the world as we've known it. An excerpt from 'America Alone'. MARK STEYN Sept. 11, 2001, was not "the day everything changed," but the day that revealed how much had already changed. On Sept. 10, how many journalists had the Council of American-Islamic Relations or the Canadian Islamic Congress or the Muslim Council of Britain in their Rolodexes? If you'd said that whether something does or does not cause...