Why is the United States the world police?

[Bengalzona]

Because our modern military-industrial complex was built upon the ideology that we needed to stop the spread of communism. After the Cold War, we needed to find a new purpose to justify maintaining our offensive capabilities of being able to put several hundred thousand soldiers and marines anywhere in the world in less than a week, so the idea of being the "World's Policeman" was touted. That has since changed to "Fighting the International War on Terror" because it is an easier sell since 9/11.

Now it is only opposed by those Americans who support Putin.