The significance of international law in diplomacy lies in its role in establishing norms and principles that govern interactions between states. It provides a framework for dispute resolution, treaty obligations, and the conduct of international relations. Adherence to international law fosters trust and predictability among nations, which is essential for effective diplomacy. Additionally, international law addresses global issues such as human rights, environmental protection, and trade, facilitating cooperative efforts to tackle challenges that transcend national borders. Its application can enhance a nation’s legitimacy and moral authority on the world stage.