Debates over the U.S. global defense posture are not new. As policymakers today evaluate the U.S. forward military presence, it is important that they understand how and why the U.S. global posture has changed in the past. Today's posture is under increasing pressure from a number of sources, including budgetary constraints, precision-guided weapons that reduce the survivability of forward bases, and host-nation opposition to a U.S. military presence. This monograph aims to describe the evolution of the U.S. global defense posture from 1783 to the present and to explain how the United States has grown from a relatively weak and insular regional power that was primarily concerned with territorial defense into the preeminent global power, with an expansive system of overseas bases and forward-deployed forces that enable it to conduct expeditionary operations around the globe. This historical overview has important implications for current policy and future efforts to develop an American military strategy, in particular the scope, size, and type of military presence overseas. As new and unpredictable threats emerge, alliance relationships are revised, and resources decline, past efforts at dealing with similar problems yield important lessons for future decisions. The author draws recommendations out of these lessons that touch on the importance of strategic planning; the need to think globally; the desirability of a lighter, more agile footprint overseas; and more.
U.S. Air Force (USAF) global posture—its overseas forces, facilities, and arrangements with partner nations—faces a variety of fiscal, political, and military challenges. This report seeks to identify why the USAF needs a global posture, where it needs basing and access, the types of security partnerships that minimize peacetime access risk, and the amount of forward presence that the USAF requires.
The role of the United States and its global military presence are under debate in the face of changing strategic and economic realities. The authors present a menu of global postures and compare them in terms of the U.S. Air Force bases, combat forces, active-duty personnel, and base operating costs. Ultimately, the choice will depend on perspectives on the role overseas military presence can play in achieving U.S. global security interests.
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