This collection of essays by a multinational group of authors examines the political, social and economic consequences of the most recent enlargement of the European Union. It does not confine itself to a discussion of the impact on the new member states but also considers the likely effects of this enlargement on the EU itself. These effects include not only the familiar need for new modes of governance but also involve other changes resulting from a process of what has been called mutual learning. These essays analyse various aspects of this process starting with the Constitutional Convention. Sometimes the focus is on the impact on the new members, sometimes on the changes likely to occur in the EU and its older members as a result of this enlargement. The emphasis on change is encapsulated in the book's title, `Europe on the Move'.