A “firewall” against the far-right is one of the key features of German politics. Known as the brandmauer, it emerged  after the Second World War as a way to ensure that no far-right extremist group would ever again get into power. US Vice President JD Vance told a room of European lawmakers and diplomats in Munich last weekend that there was “no room for firewalls.” Some in Germany fear the days of the firewall may be numbered. The World’s Europe correspondent Orla Barry reports.