W.On a documentary on Donald Trump over the weekend, it was interesting to see White House insiders hinting that it was a joy to work for the former president when things went well: upbeat, generous, funny, lively, sweet and light. You could almost see for yourself that he was a relatively stable genius.

The problems came, as always, when things were going less well. Because then his vanity refused to allow him to look at himself or to question his own choices, forcing him to look elsewhere for scapegoats. At those points he hit Barack Obama or the fake media or the seedy courts or the liberal swamp or the Democrats in Congress or Uncle Tom Cobley.