Orson Welles said that in order to become a star, an actor had to be easy to caricature. Physically chunky and unbalance, a greedy mouth, the face, constantly in motion, a smile planted with trees, in all circumstances, small piercing blue eyes, a cross between those of an eagle and an owl, blond hair straw… The british Prime minister, Boris Johnson, is a boon for stand-up comedians from across the Channel.

Earthiness and anger, pomp, and authority. The emotion aroused in the United Kingdom and in the world by the admission of the head of the government on 6 April in the evening at…