This edited volume explores the principle of solidarity in international and EU law. Although the concept is regularly invoked in international and EU legal and policy debates alike, its meaning, nature and functions, as well as normative contours still remain nebulous.The contributions in this volume reflect on the legal trajectory of solidarity in international and EU law and offer unique insights into the evolution and status of the principle in different fields of international and EU law. By doing so, the book also serves as a springboard for answering broader questions pertaining to...

This contributed volume examines the trend whereby the EU resorts ever more often to informal arrangements and deals with third countries in an effort to curb and manage migration flows towards the EU and facilitate the return of irregular migrants to their countries of origin or transit. The perceived success of the EU-Turkey deal provided a strong impetus for the continuation of this trend.The contributions collected and presented in this book aim to shed light on the implications of this trend for the EU constitutional order, the human rights of those affected by these deals, the third...