Summary

Neoclassical realism is an approach to foreign policy analysis that seeks to understand international politics by taking into account the nature of the international system—the political environment within which states interact. Taking neorealism as their point of departure, neoclassical realists argue that states respond in large part to the constraints and opportunities of the international system when they conduct their foreign and security policies, but that their responses are shaped by unit-level factors such as state–society relations, the nature of their domestic political regimes, strategic culture, and leader perceptions. Neoclassical realists have identified a number of important limitations to the neorealist model—for example, states do not always perceive systemic stimuli correctly, or the international system does not always present clear signals about threats and opportunities. Adherents of neoclassical realism insist that their approach represents a significant improvement on existing approaches to international relations and foreign policy, including “Innenpolitik” approaches. Nevertheless, neoclassical realism faces a host of criticisms, such as the claim that it is comparatively inefficient and that it is impossible to separate international and domestic variables. To overcome these challenges, neoclassical realists need to consider a few key avenues for future research, such as generating well-specified neoclassical realist theories of foreign policy and devoting more attention to the domestic politics of international cooperation in order to shed the “competition bias” of neoclassical realism.