In this debate we delve into the latest tensions between Serbia and Kosovo, and discuss how they could affect the efforts of the Western Balkan countries to come closer to the European Union. We also look at what is happening around Ukraine's efforts to join the EU, and what signals the EU Council should send to Kyiv at its upcoming summits this autumn and winter.
How can a much bigger European Union function effectively? Will key national interests be overridden for the benefit of collective decision-making? How should European institutions and budgets adapt to a union of more than 30 members? These are some of the big questions that European leaders are currently mulling over.