Heck, WE don't want to be the world's policeman either. But like a reluctant sodbuster who is good with a gun, we have become the sheriff because no one else had the guts or responsibility to do it. The rest of the world should just be glad that it wasn't a Stalin, Hitler, or Mao who is at the reins.
I don't like the U.S. being the worlds policeman, but the alternatives, unfortunately, are worse.
Agreement to all you posted.
I think it is, as the Founders might say: "PROVIDENCE!"
(and the world is very lucky it's us, rather than a totalitarian state.)