Political decision-making and action at the international level are shaped by complex psychological mechanisms that are often under-explored or overlooked by mainstream approaches to International Relations. This course focuses on the individual, group, and mass level psychological dynamics and processes that determine political outcomes. The course will provide in-depth explanations about identity, group behavior, leadership cults, voting behavior, media impact, ethnic conflict, nationalism, social movements, terrorism, international security, and conflict resolution topics from a political psychological perspective and the impact of political psychology to IR discipline.