John Kampfner is a British author, broadcaster and commentator. His new book, “Braver New World: The Countries Daring to Do Things Others Won’t,” will be published in April. He is a regular POLITICO columnist. Is there something wrong with me? I ask this more often than might be good for my health, as I increasingly find myself to be the only person in Berlin with a good word to say about German Chancellor Friedrich Merz. As the leader of Berlin’s latest fractious coalition marks his first year