When the Treaty of Lisbon went into effect in December 2009, the event seemed to mark the beginning of a longer phase of institutional consolidation for the EU. Since 2010, however, the EU has faced multiple crises, which have rocked its foundations and deeply challenged the narrative of 'the end of the history of integration'. The military crisis in eastern Ukraine and the refugee crisis call for a joint approach, but in practice reveal the difficulty of maintaining even the appearance of European solidarity and political unanimity. The financial and socio-economic crisis in southern Europe and Brexit present the EU with the latest set of challenges. If seventy years of European integration have taught us anything, it is that fundamental crises as well as moments of rapid institutional change form integral parts of its history. The Unfinished History of European Integration presents the reader with historical and theoretical knowledge on which well-founded judgements can be based. This textbook on European integration history has been written as a student textbook for a bachelor's or master's programme in European integration history, as a manual for the analysis of EU sources and, finally, as an information resource for a bachelor's or master's thesis.

Since May 2004 the European Union borders countries that have not yet accomplished their transformation process or are still struggling for stability. These countries are now the neighbors of the European Union, but are they also candidates for accession? The European Neighbourhood policy is a policy that explicitly excludes the possibility of accession. However, possible future membership is the strongest implicit argument for pushing the new neighbours towards reform. How does the European Union deal with its new neighbours and how do they deal with the European Union? What plans and programs of cooperation exist? What prospects and risks does the new neighbourhood imply? Are there further attempts of cooperation and European integration besides these at the EU-level? The authors try to answer these questions by providing a critical perspective of the EU policy, regional overviews, and country reports from Eastern and South Eastern Europe.