The United States is far and away the global leader in defense spending. In 2007, the most recent year for which complete data is available, the United States approved $660 billion in defense budget authority (FY09 dollars). This figure includes funding for DOD's base budget, DOE-administered nuclear weapons activities, and supplemental appropriations for Iraq and Afghanistan. http://www.armscontrolcenter.org/policy/securityspending/articles/022609_fy10_topline_global_defense_spending/