The role, I think, has something to do with the development of the atomic bomb and the billions upon billions of unaccountable American tax dollars looted towards the development of weapons systems -- much of it bogus research designed to line corporate pockets. To justify such extreme looting of the public coffers, the US needs enemies. To say who the enemies are, and to have the authority to deem them as "criminal" or "renegade" regimes, the US Gov't appointed itself as Policemen, Judge, and Jury of the world.
