Written by leading experts, this book focuses on central issues of the foreign policy of the European Union. The issues explored include: * how the EU's judges understand its relationship with the international order; * the coherence of the Union's external action; * the EU's policy to its neighbours; * the Common Security and Defence Policy; and, * the EU's participation in international organisations. By addressing each topic from a legal, political science and international relations standpoint, this relevant book highlights the different perspectives that these disciplines bring to the central issues of the EU's foreign affairs, and starts a conversation between the respective communities. Scholars and postgraduate students in European and international law, politics, and international relations will find this book invaluable. It will also prove timely for policy-makers in the EU and international organisations, as well as think tanks and non-governmental organisations specialising in European affairs.