The United States spends two times more on its military than all the other countries of the world, combined.
Yes, that's right. All 200 or so of them. Combined.
According to GlobalSecurity.org, last year, the US dropped about $625 billion in taxpayer dollars on its military, while all the rest of the world together spent $500 billion.
This does not include maintenance of our nuclear stockpile, nor, I believe, the occupational expenses of Iraq & Afghanistan. Which tip the pile to over a trillion and thus the 2x figure.
And though the growth has slowed under Obama, it is not doing what it needs to do and that is shrink.