This classic international law casebook is updated to cover recent case law, including the arbitral decision in the South China Sea Arbitration (Philippines v. China), the International Court of Justice's Certain Activities carried out by Nicaragua in the Border Area (Costa Rica v. Nicaragua) case, and the U.S. Supreme Court's ruling in Jesner v. Arab Bank. With extraordinary range and depth, this casebook probes "hot topics" such as cyber-attacks, the Paris Agreement on climate change, developments in the International Criminal Court's Al-Bashir proceedings, and complaints of racial discrimination by Palestine against Israel and by Qatar against the United Arab Emirates, all calculated to provoke engaging classroom discussions. This casebook is designed for introductory and advanced classes.