The European Union is currently facing internal challenges linked to the rise of nationalist and populist movements, which question the process of integration and the shared principles underpinning the rule of law. The Jean Monnet project “Supranational Integration and National Identities” addresses these issues through an interdisciplinary and inclusive approach, combining legal, political and historical perspectives. The project promotes teaching, research and dialogue among academics, practitioners and stakeholders, fostering a transnational network and contributing to the future of European integration.