It is hard to overstate the importance of Friedrich Merz’s urgent message to the nation after his win in the German elections. This, after all, is the beginning of a new, dangerous era in European security. It would be his “absolute priority”, Merz said, immediately after victory for the CDU/CSU was confirmed, to create unity in Europe as quickly as possible, “so that, step by step, we can achieve independence from the US”. He added: “I never thought I would have to say something like this on a television programme.” Indeed. For the leader of the conservative CDU, a lifelong...