International law governs state behavior by establishing rules and norms that states are expected to follow in their interaction with one another. This law aims to promote peace, security, and cooperation, addressing issues such as human rights, trade, and conflict resolution. Through treaties and customary practices, international law seeks to create a framework for accountability and predictability in international relations. While enforcement mechanisms are often limited, adherence to these laws is crucial for maintaining global order and mitigating disputes among nations.