This book delves into one of the most significant branches of public international law: International Humanitarian Law. It encompasses six main sections, beginning with its origins and development, exploring the legal, jurisprudential, and practical dimensions of its concept, sources, scope, principles, and mechanisms of implementation, and culminating in the contemporary challenges faced by International Humanitarian Law in light of modern armed conflicts. This book is invaluable for academic researchers, including professors and students of public law, as well as for those interested in International Humanitarian Law.