Out of every $100 spent on national defense worldwide, $40–$50 are spent by the United States. About 30% of the US Federal budget is military spending, and about 13% is paying interest on money we borrowed for previous military spending.¹ Any hypothetical war that the US couldn’t win unless it spends even more coin on military hardware is not a hypothetical war that the US should be hypothetically fighting in the first place.

¹ http://www.globalissues.org/article/75/world-military-spendi...