A leading casebook on foreign relations law, authored by widely cited scholars who also have pertinent government experience, Foreign Relations Law: Cases and Materials, Seventh Edition, examines the law that regulates how the United States interacts with other nations and with international institutions, and how it applies international law within its legal system. The book offers a compelling mix of cases, statutes, and executive branch materials, as well as extensive notes and questions and discussion of relevant historical background. New to the Seventh Edition: Addition of a third author, Ashley Deeks, a scholar with government experience as well as significant expertise in national security law, the laws of war, and intelligence gathering New excerpt of and extensive notes on the Supreme Courts 2018 travel ban decision, Trump v. Hawaii Coverage of the Supreme Courts 2018 Alien Tort Statute decision, Jesner v. Arab Bank Extensive discussion of recent treaty terminations by the Trump administration Discussion of the ongoing litigation concerning sanctuary jurisdictions in some states and localities Notes and questions on recent war powers developments, including on the use of force against the Islamic State and in Syria Updated notes and questions throughout the book to take account of recent cases, statutes, executive branch actions, and scholarship Professors and students will benefit from: Clear and logical progression of the materials, starting with the powers of government institutions and then proceeding to specific substantive topics Coverage of both cutting-edge legal developments and relevant historical background Integration of leading scholarship into the notes and questions rather than in long excerpts of secondary materials Balanced presentation of controversial topics, with probing questions to consider in class discussions Combination of theoretical analysis with practical insights from real-world examples