Treaties play a pivotal role in shaping international relations by formalizing agreements between states. They establish legal frameworks for cooperation, conflict resolution, and trade. Through treaties, countries can address shared challenges such as climate change, arms control, and human rights. Compliance and enforcement mechanisms vary, but treaties serve as a basis for diplomatic relations and obligations. Failure to adhere can lead to conflicts, but successfully ratified treaties can strengthen alliances and facilitate global governance, promoting peaceful coexistence among nations.