From the report Aug, 22 2012: Military budgets are only one gauge of military power. A given financial commitment may be adequate or inadequate depending on the number and capability of a nation’s adversaries, how well it spends its investment, and what it seeks to accomplish, among other factors.
https://www.scribd.com/doc/124154427/Council-on-Foreign-Relations-Report-Trends-in-U-S-Military-Spending