The military foundations of the United States' global dominance are eroding. For the past several decades, an overwhelming advantage in technology and resources has given the U.S. military an unmatched ability to project power worldwide. This has allowed it to guarantee U.S. access to the global commons, assure the safety of the homeland, and underwrite security commitments around the globe. U.S. grand strategy assumes that such advantages will continue indefinitely. In fact, they are already starting to disappear.
Several events in recent years have demonstrated that traditional means and methods of projecting power and accessing the global commons are growing increasingly obsolete -- becoming "wasting assets," in the language of defense strategists. The diffusion of advanced military technologies, combined with the continued rise of new powers, such as China, and hostile states, such as Iran, will make it progressively more expensive in blood and treasure -- perhaps prohibitively expensive -- for U.S. forces to carry out their missions in areas of vital interest, including East Asia and the Persian Gulf. Military forces that do deploy successfully will find it increasingly difficult to defend what they have been sent to protect. Meanwhile, the U.S. military's long-unfettered access to the global commons -- including space and cyberspace -- is being increasingly challenged.
Recently, Secretary of Defense Robert Gates argued in these pages for a more "balanced" U.S. military, one that is better suited for the types of irregular conflicts now being waged in Afghanistan and Iraq.
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