It actually kind of is. The US, being the world's richest country with by far the most powerful military, should use it to maintain peace. https://en.wikipedia.org/wiki/Bretton_Woods_system

The US is not doing the actual fighting

I came here to argue this was good from a corruption standpoint, but decided to do some research first and changed my view. https://blogs.worldbank.org/africacan/higher-salaries-can-worsen-corruption