Treaties can significantly impact national sovereignty by requiring countries to commit to certain obligations that may limit their independent decision-making. Through treaties, states often agree to abide by international laws or standards, which can dilute sovereign power in areas like trade, security, or environmental policy. However, treaties can also enhance sovereignty by providing mechanisms for conflict resolution and cooperation. Thus, while they can constrain certain aspects of governance, they can also facilitate diplomatic relations and strengthen a nation's standing on the global stage.