Introduction: EU citizenship in times of Brexit

EU citizenship played a central role in the debate preceding the Brexit referendum and during the Brexit negotiations. It is inevitable, therefore, that, in the context of Brexit the concept of EU citizenship was and continues to be deeply challenged. This Special Section takes the process of Brexit and the challenges raised against the process of European integration in this context as an invitation to critically reflect on the current state of EU law by focusing, more particularly, on the concept of EU citizenship.