Boy, do I miss being immersed in international relations sometimes! These mind-blowing images were posted on Slate.com earlier in the week. The first shows US defense spending in comparison to the next 10 highest-spending countries combined. The second shows the aircraft carriers of the world. The US has 19; the rest of the world has 12.
This is why we end up policing the world: both because we can, and because no one else has anywhere near the same capacity. It’s also how we project power to protect our interests.