The book examines the twofold 'boundaries' of the concept of the European Union's internal market – the geographical and the substantive – through the prism of expanding the internal market to third countries without enlarging the Union. The book offers a comprehensive analysis of the conditions under which the internal market can effectively be extended to third countries by exporting EU acquis via international agreements without sacrificing its defining characteristics. Theoretical rather than empirical in approach, the book scrutinises and meticulously questions the required level of uniformity within flexible integration relating to the substantive scope of the internal market, the role of foundational principles in the European Union's market edifice, and the institutional framework necessary for granting third country actors full participation in the internal market while safeguarding the autonomy of the Union's legal order.

'This wonderfully rich book interrogates the 'exportability' of the EU’s internal market concept. Its application to and in third countries asks questions about its scope and content as well as its constitutional and institutional character. And, as the book reveals, those questions may provoke different answers in different contexts. I am delighted to see its publication.'

Stephen Weatherill - Jacques Delors Professor of European Law, University of Oxford

'This book by Marja-Liisa Öberg comes at a moment of renewed attention for the so-called ‘Brussels effect’ as a consequence of the regulatory impact of EU norms in third states. Yet, rather than just highlighting the normative power of the EU, its main contribution lies in revealing the constitutional and institutional limits to exporting the internal market acquis. In that sense, it forms an essential contribution to the ongoing debate.'

Ramses A. Wessel - Professor of European Law, University of Groningen

'The impact of internal market regulation beyond the EU is central to the EU’s external relations and global power. Ambitious ‘green’ regulation and Brexit will only make it more salient. Marja-Liisa Öberg’s book is a penetrating analysis of the law and politics underlying the expansion of EU regulatory power. It accessibly explains how and why the EU’s constitutional particularities set boundaries to the internal market’s expandability and constructively proposes remedies.'

Christina Eckes - Professor of European Law, University of Amsterdam

'The title of this book strongly resonates with the current debate on the future UK-EU relationships. But it goes much further than this. It helps make sense of the intensification of the relations between the EU and neighbouring countries in the last decades, where partners share about everything but membership. More critically, it offers us a renewed vision of the Internal Market taking the perspective of its inherent limitations. This book deserves the attention of the specialists of EU external relations law as well as, more broadly, those interested in the real constitution of Europe.'

Loïc Azoulai - Professor of European Law, Sciences Po Law School, Paris

'This topical, thoughtful, and well set out book analyses how the EU exports its internal market acquis and explores the constitutional and institutional constraints that get in the way.'

Panos Koutrakos - Professor of EU Law and Jean Monnet Professor of EU Law, City, University of London