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The United States and its strongest allies (the NATO countries, Japan, South Korea and Australia) spend $1.1 trillion on their militaries combine, representing 72 percent of the world's total.
Military expenditures in 2008 (in billions of U.S. dollars with percentage of global total)
Source: Center for Arms Control and Non-Proliferation
The President's Dilemma: Deficits, Debt, and US Defense Spending
Defense Monitor Newsletter (Oct./Nov./Dec. 2009)
America's Security Role in a Changing World
Report on Allied Contributions to the Common Defense
Defense Appropriations Bill (U.S. House Committee on Appropriations)
Department of Defense Appropriations Bill, 2010
Country Comparison: Military Expenditures (CIA World Factbook)
Military Expenditure Data, 1999–2008 (SIPRI)
The Government’s Expenditure Plans, 2007-2008 (United Kingdom)
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