For any other nation such unexpectedly ugly and fatal thing as rise to power leader like Donald Trump would be potentially and imminently catastrophic but only not for the United States America.
Even if Stalin or Hitler came to power there, they would soon become tame and acted strictly under the frame of laws. If they dont do that they will be impeached and toppled.
The potentially renegade politics or even thoroughly lunatics have represented a great threat only for underdeveloped nations and authoritarian states.
America has saved our world again. This time from Donald Trump.