This book introduces the international legal system in a way that is lively, thought-provoking, and practical. The work is designed to be teachable and comprehensive. Each chapter is introduced by a problem or case-study drawn from actual situations, events or cases. The book includes such cutting-edge issues as: the use of force against non-state actors on the territory of third states, climate change, peacekeeper accountability, ozone depletion, and failed states. It challenges students to thoughtfully examine current events, including the legality of Iran?s nuclear program, Kosovo 's declaration of independence, the international prosecution of Charles Taylor, the arctic "underwater land rush ", and combating piracy off the coast of Somalia. Students are asked to utilize the materials in the chapter in determining the legal regime that governs the problem and seeking solutions through critical analysis. Relevant documents are included in the chapters themselves to encourage students to read and apply them. The most basic documents in the field are contained in annexes.