Summary of International Relations: Realism and Anarchy

## Introduction Realism is one of the main theories of international relations, emphasizing the role of power, the anarchy of the international system, and the rational behavior of states. This material explains the key strands of realism (neorealism, neoclassical realism, defensive and offensive realism), the differences between them, the mechanisms by which material capabilities influence foreign policy, and the practical implications of these theories. ## Key Concepts > Realism: A theoretical approach in international relations that posits states primarily act to ensure their security and power within an anarchic system. > Neorealism: A systemic variant of realism emphasizing the structure of the international system (distribution of material capabilities) as the primary determinant of state behavior. > Neoclassical Realism: An approach that combines systemic influences with unit-level factors (elite perceptions, domestic politics) to explain why states respond differently to the same structural conditions. ## Main Currents of Realism ### Neorealism vs. Neoclassical Realism - Neorealism focuses on the systemic level: how the distribution of power determines the opportunities and pressures on states. - Neoclassical realism examines the translation of systemic pressures into specific foreign policy through filters such as: elite perceptions, institutions, and domestic political factors. Table: Comparison of Neorealism and Neoclassical Realism | Criterion | Neorealism | Neoclassical Realism | |---|---:|---:| | Main Explanans | System structure (distribution of power) | Structure + unit-level variables (perceptions, domestic factors) | | Goal of Analysis | Explain international outcomes as systemic phenomena | Explain specific state strategies and variation over time | | Mechanism of Influence | Direct structural pressures | Mediating factors: leaders, institutions, domestic interests | ### Defensive and Offensive Realism - **Offensive Realism:** Anarchy strongly motivates states to maximize relative power; expansion is a common means of survival. - **Defensive Realism:** States seek to maximize security rather than absolute power; expansion often entails costs and risks and is not always advantageous. Fun fact: In practice, decisions about expansion are often evaluated as a gamble on the future: states take actions based on expectations of how relative power will change over time. ## Four Auxiliary Assumptions of Defensive Realism (and the Neoclassical Version) 1. The security dilemma is an enduring feature of anarchy, which creates uncertainty about the motivations of other actors. 2. Structural modifiers (geography, technology, alliances) modulate the intensity of the security dilemma between specific states or within regions. 3. Material power influences foreign policy through leaders' calculations and perceptions; quantitative indicators alone are insufficient. 4. Domestic politics constrains the effectiveness of state responses to systemic impulses (e.g., divergences between elite and public goals, institutions). > Definition: Structural Modifier: A factor that alters the intensity of systemic pressures, for example, a favorable geographical position or the presence of strong international institutions. ### Application Examples - National defense decisions (e.g., developing a defense system) may stem from fear of a future shift in relative power, but the reactions of others can create new threats and escalation. - Leaders' Perceptions: Two states with identical military capacity may prefer different strategies (balancing vs. deterrence) depending on how their elites interpret threats. ## Critique and Defense of Realism ### Critique of the Rational Model - Classical realism has historically shown ambivalence towards the rational model, with some authors arguing that not all decisions are "rational" in the sense of pure calculation. - Waltz: does not require a strict assumption of rationality; the system operate