The United Nations was created in 1945 with the primary objective of maintaining international peace and security, preventing future wars, and promoting cooperation among nations. Since its inception, the UN has become the most significant global institution for peacebuilding and conflict management. Its role is multifaceted, involving preventive diplomacy, peacekeeping operations, conflict resolution, humanitarian assistance, and the promotion of human rights and development, all of which are interconnected in ensuring long-term global peace. One of the most visible contributions of the UN to world peace is its peacekeeping missions. Peacekeepers, often referred to as the “Blue Helmets,” are deployed to conflict zones to monitor ceasefires, protect civilians, disarm combatants, and support political processes. These missions provide a neutral presence that helps build trust between conflicting parties. Although not always completely successful, peacekeeping has played a vital role in stabilizing regions such as Sierra Leone, Liberia, Cambodia, and East Timor, where UN missions helped societies transition from war to peace. Another major aspect of the UN’s role is preventive diplomacy. The UN works through its Secretary-General, special envoys, and regional offices to mediate disputes before they escalate into armed conflict. Quiet diplomacy, shuttle negotiations, and dialogue facilitation are often employed to reduce tensions. The UN’s efforts in places like Cyprus and the Middle East illustrate its continuing attempts to resolve long-standing disputes, even if outcomes are sometimes slow or partial. Conflict resolution is closely tied to