Pieter de Wilde is Associate Professor in European Studies at the Norwegian University of Science and Technology. He directs the project 'Trondheim Analytica' on social media and democracy in Europe and is steering committee member in Reconciling Europe with its Citizens through Democracy and Rule of Law (RECONNECT). Ruud Koopmans is Professor of Sociology and Migration Research at Humboldt University Berlin and directs the Migration and Diversity research area at the Wissenschaftszentrum Berlin für Sozialforschung (WZB). Wolfgang Merkel is Director of the 'Democracy and Democratization' unit at the Wissenschaftszentrum Berlin für Sozialforschung (WZB) and Professor of Political Science at Humboldt University. He is a member of the Berlin–Brandenburg Academy of Science. Oliver Strijbis is SNSF Professor at the Institute of Political Science of the Universitat Zurich and an associated researcher at the German Institute of Global and Area Studies (GIGA). Michael Zürn is Director at the Wissenschaftszentrum Berlin für Sozialforschung (WZB) and Professor of International Relations at the Freie Universität Berlin. He also directs the Cluster of Excellence 'Contestations of the Liberal Script' and is a member of the Berlin–Brandenburg Academy of Science and the Academy of Europe.

• 1. Cosmopolitanism and communitarianism: how globalization is reshaping politics in the twenty-first century Ruud Koopmans and Michael Zürn; Part I. Domestic Impacts: 2. Why are elites more cosmopolitan than masses? Oliver Strijbis, Céline Teney and Marc Helbling; 3. Mass opinions: globalization and issues as axes of contention Bernhard Weßels and Oliver Strijbis; 4. Mapping policy and polity contestation about globalization: issue linkage in the news Pieter de Wilde; Part II. Supranational and Cross-level Analyses: 5. Who is the most frequent traveller? The cosmopolitanism of national, European, and global elites Oliver Strijbis; 6. Globalization conflict in international assemblies: cleavage formation beyond the state? Pieter de Wilde, Wiebke Junk and Tabea Palmtag; 7. Who are the cosmopolitans and the communitarians? Claims-making across issues, polity levels and countries Ruud Koopmans; Part III. Conclusion: Conclusion. The defects of cosmopolitan and communitarian democracy Wolfgang Merkel and Michael Zürn.

'It's hard to be balanced in so contentious a debate as that between the claims of cosmopolitanism and place-based communities. The Struggle Over Borders succeeds admirably. It not only goes beyond ideological oppositions but brings empirical evidence to bear on clarifying a world that is always more complicated than polar oppositions suggest. A very helpful book.' Craig Calhoun, Arizona State University