Hungary is no stranger to spats with its European neighbours. Under prime minister Viktor Orbán’s leadership, it has exercised veto rights to block Ukrainian military aid and Russian sanctions, delayed the Nato accessions of Sweden and Finland and shrugged off EU asylum regulations. For Budapest, the disputes have proven to be effective leverage in unfreezing funds — once €30million (£25 million), now some €22million (£19 million) — held by the Commission over rule of law violations and corruption concerns.