The posters are going up all over Hungary. “Let’s not allow them to decide for us,” runs the slogan alongside three classic villains of Hungarian government propaganda. They are: Ukraine’s wartime leader, Volodymyr Zelenskyy; the European Commission’s president, Ursula von der Leyen; and Manfred Weber, the German politician who leads the centre-right European People’s party in the European parliament, which counts Hungary’s most potent opposition politician among its ranks. That decision is Ukraine’s membership of the EU, a distant prospect not in the gift of any of the politicians now plastered across billboards in Hungary. Ballot papers, being sent out...