The following article from the American Interest by Walter Russell Mead, in my humble opinion, comes closest to understanding the phenomenon of Donald Trump. Even Trump's supporters cannot be 100% sure of whether he is going to do what he says he is going to do, or even what he is going to do in any highly specific way; but they do sense is that the USA (and I would add the West in general) is an express train racing towards the abyss. Trump is the fellow who is pushy enough to push the Emergency Stop button on a carriage full of frightened passengers: http://www.the-american-interest.com/2016/05/23/the-meaning-of-mr-trump/
Walter Russell Mead is the first to say what might soon become accepted wisdom, and so let us have a look at the wikipedia entry for a commentator who deserves his salary: https://en.wikipedia.org/wiki/Walter_Russell_Mead
