Book excerpt: Grand strategy integrates military, political, and economic means to pursue states ultimate objectives in the international system. American grand strategy had been in a state of ux prior to 2001, as containment of the Soviet Union gave way to a wider range of apparently lesser challenges. The 9/11 attacks on the Pentagon and the World Trade towers, however, transformed the grand strategy debate and led to a sweeping reevaluation of American security policy. It may still be too early to expect this reevaluation to have produced a complete or nal response to 9/11 policies as complex as national grand strategy do not change overnight. But after 3 years of sustained debate and adaptation, it is reasonable to ask what this process has produced so far, and how well the results to date serve American interests.