Intergovernmental organizations (IGOs) are significant in politics as they facilitate cooperation among countries on issues like trade, security, and environmental challenges. They provide a platform for dialogue, helping to resolve conflicts and establish common standards. For instance, the United Nations plays a crucial role in maintaining peace and promoting human rights globally, while regional organizations like the European Union work toward economic integration and political stability. IGOs also influence policy-making at national levels, encouraging member states to adhere to international agreements and foster collaboration on global challenges.