The nightmare recurs. Call it the British Versailles. Theresa May is ash-white and exhausted after sixteen hours of cliff-edge talks. The grim ordeal lasts deep into the night on Friday, October 19. 

Britain’s friends around the table at the Justus Lipsius – named after the stoic Flemish author of "De Constantia" – wince with pain and sympathy at the emotional spectacle. Yet they say nothing. The sum of the European Council is of a different character from its parts.

The document sitting before Mrs May spells out the terms. There is no bespoke deal, and no market access for services. The "Canada plus" model has degenerated into a deformed variant of "Canada colonial" with a permanent EU veto over larger areas of British law and policy. It is the worst of all worlds: a limited trade deal under draconian conditions. Medieval historians would call it suzerainty. 

The ghastly error of British...