It will come as a surprise to no one that Jean-Claude Juncker was asked so many questions by the media of several member states on the occasion of the 50th anniversary of the Treaty of Rome. He is the longest-serving member of the European Council (he has been a member of it since January 1995), he is the only long-duration president of a European ministerial body (the Eurogroup) and he was one of the main authors of the Treaty of Maastricht, which gave rise to the euro. His opinion is worth...