The significance of the United Nations (UN) in international politics lies in its role as a global organization founded to promote peace, security, and cooperation among nations. Established in 1945, the UN provides a platform for dialogue and negotiation, helping to prevent conflicts through diplomacy and international law. It addresses various global issues—such as human rights, economic development, and humanitarian crises—by coordinating efforts among its member states. The UN's peacekeeping missions and initiatives like the Sustainable Development Goals reflect its commitment to fostering stability and prosperity worldwide, thus shaping international relations in the modern era.