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Meaning Features of Neorealist Theory
Neorealism, also known as structural realism, is a theory of international relations that emerged in the mid-20th century as a response to classical realism. Neorealism places a greater emphasis on the systemic structure of the international system, particularly the distribution of power among states, in shaping their behavior.
Neorealism was developed primarily by Kenneth Waltz, an American political scientist. Waltz’s ideas are outlined in his seminal work “Theory of International Politics,” published in 1979.

In this book, Waltz presents neorealism as a systematic theory that emphasizes the structure of the international system and the distribution of power among states as the primary determinants of state behavior. While Waltz is considered the foremost proponent of neorealism, other scholars such as Robert Jervis and John Mearsheimer have also contributed to the development and refinement of neorealist theory.
1. Structural Anarchy: Neo-Realist theory posits that the international system lacks a central authority, leading to an anarchic environment where states must rely on self-help mechanisms for security.
2. State as Unitary Rational Actors: States are considered as rational actors with unitary goals, primarily concerned with survival and maximizing their relative power within the system.
3. Balance of Power: Neo-Realism emphasizes the importance of maintaining a balance of power among states to prevent hegemony and ensure stability in the international system.
4. Distribution of Power: The theory focuses on the distribution of power among states as the primary determinant of state behavior, with particular attention to the capabilities of major powers.
5. Security Dilemma: Neo-Realism highlights the security dilemma, where states’ efforts to enhance their security may inadvertently provoke insecurity among other states, leading to arms races and conflict escalation.
6. Relative Gains: States are believed to prioritize relative gains over absolute gains, meaning they are more concerned with gaining power relative to other states rather than their absolute gains.
7. Mistrust and Competition: Neo-Realist theory assumes a fundamental level of mistrust and competition among states, stemming from the anarchic nature of the international system.
8. Polarity: Neo-Realism considers the distribution of power in terms of polarity, ranging from unipolarity (dominance by one major power) to multipolarity (balance of power among several major powers), with each polarity affecting state behavior differently.
9. Long-Term Stability: The theory suggests that the pursuit of power and the balance of power dynamics contribute to long-term stability in the international system by deterring aggression and maintaining equilibrium.
10. Structural Constraints: Neo-Realism argues that the structure of the international system imposes constraints on state behavior, shaping their choices and interactions within the system.
Definitions
- Kenneth Waltz: In his seminal work “Theory of International Politics,” Kenneth Waltz defines neorealism as a theory that emphasizes the systemic structure of the international system, particularly the distribution of power among states. According to Waltz, states are rational actors driven by the anarchic nature of the international system to pursue strategies aimed at maximizing their relative power and security.
- John J. Mearsheimer: Mearsheimer, another prominent neorealist scholar, defines neorealism as a theory that focuses on the distribution of power among states as the primary determinant of their behavior in international politics. He emphasizes the importance of the balance of power and the security dilemma in shaping state behavior, arguing that states seek to maintain or enhance their relative power in order to ensure their survival in an anarchic world.
Differences between Realist and Neorealist Theory (Note: This part is not required for exams, but just to make you aware the basic difference between realism and neo realism)
1. Unit of Analysis: – Realism: Focuses on individual states as the primary unit of analysis. – Neo-Realism: Also emphasizes states but pays more attention to the structure of the international system and the distribution of power among states.
2. Human Nature: – Realism: Often assumes a pessimistic view of human nature, portraying states as inherently selfish and power-seeking.
– Neo-Realism: Less concerned with human nature and more with systemic factors shaping state behavior, such as the anarchic structure of the international system.
3. Determinants of State Behavior: – Realism: Considers both internal and external factors, including domestic politics, leadership, and historical grievances, as significant determinants of state behavior.
– Neo-Realism: Emphasizes structural factors, such as the balance of power and security dilemmas, as primary drivers of state behavior, downplaying the role of domestic politics.
4. Concept of Power: – Realism: Views power in broader terms, including military, economic, and soft power.
– Neo-Realism: Often focuses more narrowly on military power and capabilities, especially in the context of balancing against potential threats.
5. Approach to Change: – Realism: Acknowledges the possibility of change in the international system but tends to be skeptical of rapid or fundamental changes, preferring to focus on enduring patterns of state behavior.
– Neo-Realism: Tends to be more conservative in its outlook, emphasizing the resilience of the international system’s structural dynamics and the limitations on transformative change.
6. View on International Organizations: – Realism: Regards international organizations as secondary to states and often as instruments for advancing state interests.
– Neo-Realism: Shares a similar skepticism toward international organizations but may recognize their role in reflecting or reinforcing power dynamics among states.
7. Relative vs. Absolute Gains: – Realism: Can be open to both relative and absolute gains, depending on the context and the interests of states involved.
– Neo-Realism: Emphasizes relative gains, suggesting that states are primarily concerned with gaining power relative to other states rather than their absolute gains.
8. Level of Analysis: – Realism: Can operate at different levels of analysis, including individual, state, and international levels.
– Neo-Realism: Typically focuses more on the international and systemic levels, with less emphasis on individual state characteristics or variations.
9. Evolution of Theory: – Realism: Represents an older tradition in international relations theory, with roots tracing back to classical theorists like Thucydides and Machiavelli.
– Neo-Realism: Emerged in response to perceived limitations of classical realism and gained prominence in the latter half of the 20th century, particularly through scholars like Kenneth Waltz.
10. Predictive Power: – Realism: Valued for its insights into state behavior and power dynamics but may struggle to explain changes in the international system.
– Neo-Realism: Often lauded for its predictive power and ability to explain systemic patterns of behavior, especially in relation to balancing and security dilemmas.
Merits of Neorealist Theory
1. Predictive Power: Neo-Realist theory has been praised for its ability to predict and explain patterns of state behavior and systemic dynamics in the international arena. Its emphasis on structural factors such as the balance of power has proven valuable in analyzing geopolitical trends and outcomes.
2. Focus on Security: By prioritizing the security concerns of states within an anarchic international system, Neo-Realism highlights the importance of understanding the motives behind states’ actions, particularly in conflict and crisis situations. This focus on security helps policymakers anticipate potential threats and formulate appropriate responses.
3. Emphasis on Power Dynamics: Neo-Realism provides a clear framework for understanding power relations among states and the strategies they employ to maintain or alter the balance of power. This emphasis on power dynamics sheds light on issues such as alliances, military capabilities, and the pursuit of hegemony, offering insights into state behavior and interactions.
4. Long-Term Stability: Advocates of Neo-Realist theory argue that the pursuit of power and the balance of power dynamics contribute to long-term stability in the international system by discouraging aggression and promoting equilibrium. By analyzing power shifts and potential sources of conflict, policymakers can work towards maintaining stability and preventing destabilizing events.
5. Applicability across Historical Contexts: Neo-Realist theory has demonstrated its relevance across various historical contexts and geopolitical landscapes, from the Cold War era to contemporary global affairs. Its broad applicability allows scholars and policymakers to adapt its principles to different situations, making it a versatile framework for analyzing international relations.
Demerits of Neorealist Theory
1. State-centric Focus: Neo-Realist theory’s emphasis on states as unitary rational actors may oversimplify the complexities of state behavior, neglecting the role of non-state actors, subnational groups, and transnational dynamics in shaping international relations.
2. Neglect of Interdependence: Neo-Realism tends to downplay the significance of economic interdependence, globalization, and other forms of interdependence that influence state behavior in the contemporary world, leading to an incomplete understanding of modern international relations.
3. Limited Predictive Power: While Neo-Realism is valued for its ability to explain systemic patterns of behavior, it may struggle to predict or account for changes in the international system, such as shifts in alliances, the emergence of new actors, or the impact of non-traditional security threats.
4. Underestimation of Cooperation: Neo-Realist theory’s focus on competition and conflict may lead to an underestimation of the potential for cooperation among states, overlooking instances where states collaborate for mutual benefit, such as in trade agreements, environmental treaties, or humanitarian interventions.
5. Neglect of Non-material Factors: Neo-Realism’s concentration on material power and structural constraints may neglect the importance of non-material factors, such as ideas, norms, culture, and identity, which also shape state behavior and international outcomes. Ignoring these factors can limit the theory’s explanatory power and relevance in certain contexts.
Additional Study Materials
John Mearsheimer explains Neo Realism
IAS/UPSC Question Paper 2021
