This article examines The Nexus Between Displacement, Food Insecurity, and Malnutrition in South Sudan: Policy Implications for Fragile States with a focused emphasis on South Sudan within the field of Political Science. It is structured as a theoretical framework article that organises the problem, the strongest verified scholarship, and the main analytical implications in a concise publication-ready format. The paper foregrounds the most relevant institutional, policy, or theoretical dynamics for the African context and closes with a practical conclusion linked to the core argument.