International organizations, such as the United Nations or European Union, significantly impact state sovereignty by promoting international norms and cooperation that can sometimes constrain a state's independent policy decisions. These organizations provide frameworks for addressing global issues like human rights, economic development, and environmental protection, encouraging states to meet certain standards. While international organizations can help states enhance their legitimacy and security through alliances, their influence may limit the autonomy of states in decision-making processes, leading to debates about the balance between sovereignty and global governance.