On September 11, 2001, al Qaeda carried out the deadliest foreign terrorist attack the United States had ever experienced. To Osama bin Laden and the other men who planned it, however, the assault was no mere act of terrorism. To them, it represented something far grander: the opening salvo of a campaign of revolutionary violence that would usher in a new historical era. Although bin Laden was inspired by religion, his aims were geopolitical. Al Qaeda’s mission was to undermine the contemporary world order of nation-states and re-create the historical umma, the worldwide community of Muslims that was once held together
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