This book examines the application of public international law and international humanitarian law in the context of South Sudan. It delves into the principles of international law and their implementation in South Sudan, providing an in-depth investigation of the legal framework that governs the nation. The book focuses on the relationship international and the social economic, and political context of South Sudan. It analyses the application of international law in armed conflicts and humanitarian crises, exploring the ways in which the principles of international humanitarian law have been implemented in the region. In addition, it offers insights into the role of international organizations and institutions in enforcing these laws, including the International Criminal Court and the United Nations. This book is an essential resource for anyone involved in international law and international humanitarian law whether as a scholar, policymaker, state official, judicial officer, stakeholder in internal and external security sectors as well as anyone interested in understanding the role of international law in South Sudan.