This key idea delves into the basic principles and sources of international law, including treaties, customs, and general principles recognized by civilized nations. It explains how these elements come together to form the legal framework that governs the interactions between states and other international actors.

The book highlights the significance of international organizations such as the United Nations, the International Court of Justice, and various regional bodies. It discusses their functions, powers, and the ways in which they contribute to the development and enforcement of international law, promoting cooperation and resolving conflicts.

"International Law" addresses how international legal principles are applied to contemporary global challenges, such as human rights, environmental protection, and the regulation of armed conflict. It emphasizes the importance of international law in addressing these issues and the ongoing efforts to adapt legal frameworks to meet the evolving needs of the international community.