The first edition of this seminal textbook made a significant impact on the teaching of EU external relations law. This new edition retains the key hallmarks of that success. It offers a dual perspective, looking at questions from the EU constitutional law perspective (the EU as an international actor, competences, the role of the European Court of Justice); and the international law perspective (the effect of international agreements in the EU legal order, the relationship between WTO and EU law). A number of key substantive policy areas are explored, including international trade (CCP), security and defence policy, and justice and home affairs. Taking a text and materials approach, it allows students to gain a meaningful understanding of milestone cases and vital primary documents. The commentary, however, ensures that students are given interpretative and substantive guidance allowing them to properly position and digest these materials. Finally, each chapter ends with a section entitled 'The big picture of EU external relations law'. This innovation provides coherence to the diverse and complex material included and will stimulate critical discussion of the topics covered.