If the Duke of Sussex’s hopes are for an early reconciliation with his family, his wishes seem unlikely to be fulfilled any time soon, judging from extracts published from his tell-all memoir, Spare, due out on Tuesday. The dramatic scenario Harry describes, with his brother William, now Prince of Wales, allegedly physically attacking him and knocking him to the floor in a furious row over the Duchess of Sussex, is startling. It shows, despite the six-hour Netflix documentary series, Harry still has the ammunition; that he is happy to take aim at his family and the institution; and that he...