The purpose of this book is to review and summarize international cases identified as being essential for the police. The cases embody the jurisprudence of courts and bodies established under international law to secure compliance with international human rights and humanitarian standards, and they are essential for the police, and anyone seeking to understand the theory and practice of policing, because they have a direct bearing on the exercise of police powers and the performance of police functions. Part I provides a general introduction; Parts II and III concern police powers and respect for human rights, and police functions and protection of human rights. Part IV deals with police behaviour in times of armed conflict, disturbance and tension. Introductions to the parts and their respective chapters outline scope and contents.