International Relations Theory encompasses various frameworks that help us understand the interactions between states and non-state actors on the global stage. It includes theories such as Realism, which emphasizes power and security, and Liberalism, which focuses on cooperation and international institutions. These theories provide insights into global issues like conflict, diplomacy, and trade. By analyzing the motivations and behaviors of different actors, International Relations Theory aids policymakers and scholars in navigating the complexities of global politics and fostering international cooperation.