Editor’s note: Let there not be any pompous pretense of neutrality here. This is the opinion of a Democrat from the progressive side of that spectrum. On this occasion we mostly heard bravado, with a mostly unsaid undertone of bigotry. Rand Paul did inject a few notes of reality into the discussion, in which the Republican mainstream would have America go to war with Iran, Russia, China and the entire Muslim world, snapping imperial fingers to instantly change other countries about which these men and this woman hardly know. Do you think that Americans ought to be very frightened? Think about the rest of the world.