He bitterly complained an escalator at UN headquarters stopped while he was on it and revived an old gripe that the world body had refused his offer to fix up its aged Turtle Bay building back in his real estate days. “‘I’m going to give you marble floors; they’re going to give you terrazzo,’” he recalled of his pitch.

► Trump also made nonsensical arguments about climate change that laid bare his rudimentary grasp of science. “We have a border, strong, and we have a shape, and that shape doesn’t just go straight up; that shape is amorphous when it comes to the atmosphere,” Trump said. “We have very clean air … but the problem is that other countries like China, which has air that’s a little bit rough, it blows.” And he warned of a coming bovine purge. “They want to kill all the cows,” he said, of environmentalists.

► Britain, meanwhile, got an abrupt lesson in what flattery buys you with Trump: not very much. After laying on a fawning royal welcome for the US president last week, the British delegation had to sit and watch him tell a lie — that London wants to go to sharia law. And Trump paid back Prime Minister Keir Starmer’s obsequiousness by slamming his renewable energy policies. “Oh, the North Sea, I know it so well,” Trump said. “Three days in a row, that’s all he heard, North Sea oil, North Sea.” Starmer is already facing pressure from his own Labour MPs to condemn the man he hosted last week.