Enlargement has been an almost constant part of European integration history – going from an improvised exercise to the EU’s most developed foreign policy tool. However, neither the longevity nor the complexity of enlargement has been properly historicised. European Enlargement across Rounds and Beyond Borders offers three interdisciplinary, innovative, and indeed radical, new ways of understanding and analysing EC/EU enlargements: first, tracing Longue Durée developments; second, investigating enlargement Beyond the Road to Membership; and third, exploring the Entangled Exchanges and synergies between the EC/EU and its outside. This edited volume will provide fresh perspectives on enlargement as one of the defining processes in Europe in the second half of the 20th century: How are we to understand enlargement as a policy? How has it changed the EU? What is the historical role of the British press in shaping the UK’s visions of Europe? How has enlargement played into Russia’s relationship with today’s EU? Giving answers to these questions, and many more, this volume wishes to spark a broad debate about the roots, range, and repercussions of enlargement, and how historians, and other scholars, should engage with it. This publication will be of key interest to scholars and students of modern European history and politics, the European integration process, EU studies, and more broadly multilateral international institutions, history, law and the social sciences.