Friedrich Merz, chancellor candidate and leader of the opposition Christian Democrats (CDU), attends a session at the Bundestag prior to a vote on a CDU/CSU-sponsored series of measures concerning immigration and border security on January 31, 2025. Photo: Maja Hitij/Getty Images German politics are going through a dangerous moment following the decision of Friedrich Merz, the centre-right opposition leader, to pursue and accept parliamentary votes on immigration from the far-right party Alternative fur Deutschland (AfD). Passage of a non-binding parliamentary motion through the Bundestag last week with their support is a fundamental break from the cross-party “firewall” that has denied...