LONDON – The American nation appears not only immensely distressed and angry about the bombings but surprised too. It cannot understand why anyone should be moved by such hatred against it and, inured from the rest of us by the isolationism of most of its political representatives and its media, it has little idea of the currents swirling against it. An event of this magnitude was not only unimagined, it was unimaginable. Yet long before George Bush became president with his forceful in-your-face, take-it-or-leave-it attitude to the world outside on issues as diverse as global warming and anti-missile defences, America has been turning in on itself, to the point of self-destructiveness. William Pfaff, the astute American commentator, wrote recently that “America is a dangerous nation while remaining a righteous one” and America’s pre-eminent foreign policy observer, George Kennan, ambassador to the Soviet Union during Stalin’s time, wrote quite a few...