In September 2005, fifty-five chiefs of navies and coast guards, along with twenty-seven war college presidents from around the world gathered in Newport for the Seventeenth International Seapower Symposium. We shared perspectives on a broad range of issues important to the global maritime community and individual countries through the mechanism of regionally oriented seminars. As the symposium drew to a close, a consensus was articulated that maritime security was fundamental to address these concerns, that the scope of security challenges reached beyond the waters of individual nations, and most importantly, that the responsibilities in the maritime domain-the great "commons" of the world-were shared. Moreover, the need was expressed for regional and global mechanisms that allowed maritime nations to more routinely and effectively bring their particular capabilities together to ensure a free and secure maritime domain. The host of the ISS, Admiral Mike Mullen, summarized the key proposition of the symposium: "Because today's challenges are global in nature, we must be collective in our response. We are bound together in our dependence on the seas and in our need for security of the vast commons. This is a requisite for national security, global stability, and economic prosperity." Acknowledging that "the United States Navy could not, by itself, preserve the freedom and security of the entire maritime domain," Admiral Mullen said that "it must count on assistance from like-minded nations interested in using the sea for lawful purposes and precluding its use by others that threaten national, regional, or global security." So too must each nation count on assistance from other nations. Over the past two years the Naval War College has found itself in a position of prominence in helping the leadership of our maritime forces, and the leaderships of our global partners, think through the implications of a new set of global security challenges and opportunities. It has been a very productive period since the College-against the fundamental notions of the Seventeenth International Seapower Symposium-was tasked to work on a new strategy "of and for its time." Critical to our effort to rethink maritime strategy has been an extensive scenario analysis and war-gaming effort and a series of high-level conferences, symposia, and other professional exchanges with maritime partners here in Newport and at other venues around the world. This collaborative effort has produced great insight and brought into focus the diverse perspectives necessary to make this strategy robust across multiple arguments and useful for both naval leadership and national policy makers in understanding the key role maritime forces must play in the evolving international system. We see some interesting new ideas in this strategy: the preeminent value of maritime forces to underwrite stability for the global system and an emphasis on unique capabilities inherent in maritime forces to prevent global shocks and to limit and localize regional conflict. While this enhances the long-standing naval commitment to provide high-end capability, there are clear new demands related to sustaining the global system-unique in the maritime domain. The new maritime strategy also recognizes that capacity must rely increasingly, across the range of military operations, on an expanded set of more robust, global maritime relationships-in effect, partnerships that engender trust, enable prevention, and yield more effective maritime security. The present volume contributes clearly and significantly to building just this sort of maritime partnerships. In subsequent guidance to the Naval War College, Admiral Mullen emphasized that any new strategy must be one viewed through the eyes of our partners. The essays from the Americas that follow are a compendium of "perspectives on maritime strategy."