Sir Keir Starmer chose the grandeur of Lancaster House in central London to stage the first post-Brexit EU-UK summit on May 19th. He, Ursula von der Leyen (the European Commission’s president) and António Costa (the European Council’s president) all duly talked up a historic “reset” of relations. In fact what was agreed were various small changes to eliminate the worst trade frictions, plus a new defence deal. But this may presage the start of longer negotiations that in time bring the two sides closer together.