In the current world system, there is no way to begin a true WWIII without the US initiating it.
So if one does come up, it is only with our consent.

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"Man lives in the sunlit world of that which he believes to be reality. But unseen by most is an underworld, a place that is just as real... but not as brightly lit... A DARK SIDE!"
-opening from Tales From the Darkside