>> This is really nothing new. Both Republican and Democratic administrations have thought the US is the cop of the world since right after WWII. Witness Greece, Korea, Vietnam etc. <<
True, yet - it does further diminish international ties, and assume more of a 'lone wolf' stance.
That, in the hands of this administration in particular, is a very dangerous sign. It lays the foundational justifications for further actions, across a broader scale, and with intentionally less ties back to the international arena.