The United Nations (UN) plays a crucial role in global peace through various mechanisms. It works to **prevent conflicts** by facilitating diplomacy and dialogue between nations. The UN deploys **peacekeeping missions** to stabilize regions in conflict and protect civilians. It promotes **disarmament** by negotiating treaties and conventions to reduce weapons and prevent proliferation. The UN also addresses **root causes** of conflict, such as poverty and human rights violations, through its development programs and agencies. By fostering international cooperation and providing a platform for collective action, the UN contributes to maintaining and promoting global peace and security.