<h1>Bulgarian Nationalists Protest Euro Adoption, Clash with Police; Vazrazhdane Party Demands Referendum or Threatens Disruption</h1> Around 1,000 Bulgarian nationalists protested in Sofia against government plans to adopt the euro, clashing with police and demanding the government's resignation. The protest, organized by the pro-Russia Vazrazhdane party, involved demonstrators throwing paint and firecrackers at the European Commission office, resulting in arrests and injuries. The party's leader called for a referendum on eurozone entry, threatening to disrupt the National Assembly if not granted. Bulgaria, an EU member since 2007, faces political instability, with the new government prioritizing eurozone membership despite economic concerns and opposition from nationalist factions.