Treaties and agreements impact international relations by establishing formal commitments between states on various issues, including trade, defense, and environmental policies. These instruments create frameworks for cooperation and conflict resolution, shaping the interactions of nations on the global stage. Successful treaties can enhance diplomatic relations and foster trust, while failures or disputes can lead to tensions and conflicts. The complexity of enforcing treaties also highlights the importance of international organizations, such as the United Nations, in facilitating negotiation and compliance among member states.