PSCI 240: Introduction to International Relations (Updated Series) - Neorealism: Power, Structure, and the Logic of Anarchy in International Relations

Why do states arm themselves, even when they claim to want peace? Why do global rivalries persist, even after revolutions and regime changes? In this video, Professor Noah Zerbe explains the theory of neorealism (also known as structural realism) and explores how the anarchic structure of the international system shapes state behavior. From Cold War stability to today’s U.S.–China tensions, we’ll consider key concepts like polarity, the balance of power, and the security dilemma, and examine how theorists like Kenneth Waltz and John Mearsheimer help us understand a world where survival comes first. Whether you're new to international relations or brushing up for a class, this is your essential primer on one of IR's most influential theories.