Public International Law offers a comprehensive understanding of international law as well as a fresh and highly accessible approach. While explaining the theory and development of international law, this work also examines how it functions in practice. Case studies and recent examples are infused in the discussion on each topic, and critical perspectives on the principles are given prominence, building an understanding of how and why the international legal system operates in the way it does and where it is heading. The book explains the theoretical foundations for each principle in detail before illustrating how these principles function in practice.