Book excerpt: The European Union (EU) is in crisis. The crisis extends beyond Brexit, the fluctuating fortunes of the eurozone and the challenge of mass migration. It cuts to the core of the EU itself. Trust is eroding; power is shifting; politics are toxic; disillusionment is widespread; and solidarity has frayed. In this major new text leading academics come together to unpack all dimensions of the EU in crisis, and to analyse its implications for the EU, its member states and the ongoing study of European integration.