World Police

U.S. Foreign Policy Forum

People have asked "Why America is the police"
this dates back to the creation of the United Nations - The Big 5 United States, Britain, France, China, and Soviet Union (at the time anyways) created the UN. As everyone knows.
The United States refused to sign UNLESS it was permitted and provided this power - this was in 1944 - 1945.

That gives you something to think about. For more information - you can look it up.