Information is a key variable in International Relations, underpinning theories of foreign policy, inter-state cooperation, and civil and international conflict. Yet IR scholars have only begun to grapple with the consequences of recent shifts in the global information environment. We argue that information disorder—a media environment with low barriers to content creation, rapid spread of false or misleading material, and algorithmic amplification of sensational and fragmented narratives—will reshape the practice and study of International Relations. We identify three major implications of information disorder on international politics. First, information disorder distorts how citizens access and evaluate political information, creating effects that are particularly destabilizing for democracies. Second, it damages international cooperation by eroding shared focal points and increasing incentives for noncompliance. Finally, information disorder shifts patterns of conflict by intensifying societal cleavages, enabling foreign influence, and eroding democratic advantages in crisis bargaining. We conclude by outlining an agenda for future research.
