What is the role of Ideology in IR?

In International Relations (IR), ideology serves as a framework through which states and non-state actors interpret their interests, shape their policies, and justify their actions on the global stage. It influences decision-making by providing a set of beliefs and values that guide foreign policy, affecting alliances, conflicts, and diplomacy. Ideological factors, such as nationalism, liberalism, and religious beliefs, can impact the behavior of states and their interactions, often transcending mere strategic calculations. Ultimately, ideology shapes the narratives that define global order and international interactions.