A Donald Trump-shaped shadow is looming over the campaign for Germany’s snap elections next month, with unprecedented US interference on behalf of the far-right Alternative für Deutschland and a startling degree of attention from the incoming US administration scrambling the political landscape. In a country that puts a premium on stability, Trump’s second term is forcing all parties to revamp fundamental stances, with responses ranging from opportunistic fealty to still wan-looking resistance. The stakes for Berlin could hardly be higher. “Trump’s rise and the turn towards authoritarianism and illiberalism in the US is a psychological challenge for a German elite...