Poland became an EU member during the 2004 enlargement, but has yet to join the euro. Agata Gostyńska assesses the first ten years of Polish EU membership and the potential for the country to take a more central role in EU decision-making. She writes that Poland has made a successful transition from a ‘junior member state’ to a stronger actor on the EU stage, and that the Eurozone crisis in particular has allowed the country to take a more active role in EU developments. Nevertheless, Poland will have to confront future challenges, most notably resolving its position on the euro and dealing with the potential rebalancing of power brought about through the upcoming change to Council of the EU voting rules in November