Table of Contents
Neorealism
1. Introduction
Neorealism, also called structural realism, is a major theory of International Relations developed primarily by Kenneth Waltz.
Neorealism retains the realist emphasis on power, security and state survival but explains international behaviour differently from classical realism.
Instead of focusing primarily on human nature, neorealism emphasizes the structure of the international system, especially anarchy and the distribution of capabilities among states.
2. Meaning of Neorealism
Neorealism argues that the behaviour of states is strongly influenced by the structure of the international system.
The central structural characteristics are:
- international anarchy
- absence of central authority
- functional similarity of states
- unequal distribution of capabilities
States must operate within this structure regardless of their individual preferences.
3. Kenneth Waltz
Kenneth Waltz was the leading theorist of neorealism.
His major work, Theory of International Politics, published in 1979, established structural realism as a major approach in International Relations.
Waltz sought to develop a more systematic explanation of international politics.
4. International Anarchy
Anarchy is the starting point of neorealist analysis.
International anarchy means that there is no central authority above sovereign states capable of enforcing rules in the same way that a domestic government can.
States therefore operate in a self-help environment.
5. Structure of the International System
Waltz identified important elements of international structure.
These include:
- Ordering principle
- Functional differentiation
- Distribution of capabilities
The ordering principle of international politics is anarchy.
6. States as Like Units
Neorealism treats states as functionally similar units.
All states must perform broadly similar essential functions, such as:
- maintaining security
- preserving territorial integrity
- organizing governance
- providing defence
The major difference lies in their capabilities.
7. Distribution of Capabilities
The distribution of capabilities determines the structure of the system.
States may differ significantly in:
- economic resources
- military power
- technology
- population
- strategic capabilities
The relative distribution of these capabilities affects international outcomes.
8. Bipolarity and Multipolarity
Neorealism pays particular attention to polarity.
The major configurations include:
- unipolarity
- bipolarity
- multipolarity
Waltz argued that bipolar systems can be comparatively stable because the major powers have fewer strategic relationships to manage.
9. Balance of Power
States respond to concentrations of power.
They may seek to balance against stronger states through:
- internal balancing
- external balancing
Internal balancing involves developing one’s own capabilities.
External balancing involves forming alliances.
10. Internal Balancing
States can increase security by strengthening their own capabilities.
This may involve:
- military modernization
- economic development
- technological investment
- strategic weapons
- defence industries
11. External Balancing
States can also balance through alliances.
An alliance allows states to combine capabilities against potential threats.
External balancing is particularly important when a state cannot independently match a stronger power.
12. Security Dilemma
Neorealism provides a structural explanation for the security dilemma.
Because states cannot be certain about others’ intentions, defensive measures can appear threatening.
One state’s effort to improve security can therefore reduce another state’s sense of security.
13. Self-Help
Self-help is a central consequence of anarchy.
States cannot assume that another actor will guarantee their survival.
They must therefore maintain sufficient capabilities to protect themselves.
14. Relative Gains
Neorealists are concerned with relative gains.
States may ask:
Who gains more from cooperation?
Even if both states benefit, one may hesitate if the other gains a larger strategic advantage.
This contrasts with liberal emphasis on absolute gains.
15. Absolute versus Relative Gains
Absolute gains ask whether cooperation benefits the participants.
Relative gains ask how the benefits are distributed among participants.
A state concerned with relative gains may reject an arrangement that provides substantial benefits to both sides if the other side gains significantly more.
16. Survival as the Primary Goal
Neorealism generally treats survival as the basic objective of states.
States may pursue economic prosperity, prestige and other goals, but survival is foundational because without survival other objectives cannot be achieved.
17. Defensive Realism
Defensive realism argues that excessive expansion can undermine a state’s security.
States should seek enough power to remain secure rather than continuously maximizing power.
This approach is associated with the idea that overexpansion can generate counterbalancing coalitions.
18. Offensive Realism
Offensive realism, associated particularly with John Mearsheimer, argues that states have strong incentives to maximize their relative power because they cannot know the intentions of other states.
Under certain conditions, major powers may therefore seek regional hegemony and greater relative power.
19. Defensive versus Offensive Realism
| Defensive Realism | Offensive Realism |
|---|---|
| Security is primary | Relative power maximization emphasized |
| Excessive expansion can be dangerous | Greater power can increase security |
| States often seek sufficient power | Major powers have incentives to seek more power |
| Balancing constrains expansion | Competition remains intense |
Both approaches share important structural realist assumptions.
20. Neorealism and International Institutions
Neorealists generally recognize that institutions exist but argue that their independent influence is constrained by the distribution of state power and interests.
Institutions can facilitate cooperation, but powerful states remain important determinants of international outcomes.
21. Neorealism and Cooperation
Neorealism does not deny that cooperation occurs.
It asks why states cooperate and whether cooperation creates security risks.
States may cooperate when:
- interests overlap
- threats are shared
- relative gains are acceptable
- cooperation strengthens security
22. Criticism of Neorealism
Critics argue that neorealism:
- underestimates domestic politics
- underestimates international institutions
- underestimates norms and identities
- treats states too similarly
- struggles to explain major changes in state preferences
Liberalism and constructivism offer important alternative explanations.
23. Neorealism versus Classical Realism
| Neorealism | Classical Realism |
|---|---|
| International structure emphasized | Human nature emphasized |
| Distribution of capabilities | Power and political ambition |
| System-level analysis | Statecraft and leadership |
| Structural constraints | Human motivations |
| Kenneth Waltz | Hans Morgenthau |
24. Importance of Neorealism
Neorealism transformed International Relations theory by providing a systematic structural explanation of international politics.
It remains particularly useful for understanding:
- polarity
- great-power competition
- alliances
- balancing
- security dilemmas
- strategic rivalry
25. Conclusion
Neorealism explains international politics primarily through the structure of the international system. Anarchy, self-help and the distribution of capabilities constrain states and encourage balancing behaviour.
Its major contribution is the shift from explaining international conflict primarily through human nature to explaining it through systemic structure.
36 Key Takeaways for Exams
- Neorealism is also called structural realism.
- Kenneth Waltz is its leading theorist.
- Theory of International Politics was published in 1979.
- Neorealism emphasizes international structure.
- Anarchy is central to the theory.
- There is no central world authority above sovereign states.
- States operate in a self-help environment.
- States are treated as functionally similar units.
- Their capabilities differ significantly.
- Distribution of capabilities shapes the international system.
- Polarity is important to structural realism.
- Polarity can be unipolar, bipolar or multipolar.
- Neorealism emphasizes balance of power.
- Internal balancing involves developing domestic capabilities.
- External balancing involves alliances.
- Security dilemmas arise from uncertainty about intentions.
- Survival is a foundational state objective.
- Relative gains are important to neorealist analysis.
- Absolute gains concern total benefits.
- Relative gains concern distribution of benefits.
- Defensive realism emphasizes sufficient power for security.
- Offensive realism emphasizes power maximization.
- John Mearsheimer is associated with offensive realism.
- Neorealism does not deny international cooperation.
- Cooperation can create concerns about relative gains.
- International institutions operate within a structure dominated by states.
- Neorealism differs from classical realism.
- Classical realism emphasizes human nature more strongly.
- Neorealism emphasizes systemic constraints.
- Liberalism gives greater importance to institutions and cooperation.
- Constructivism emphasizes identities, norms and ideas.
- Neorealism is especially useful for studying great-power rivalry.
- Bipolarity received particular attention in Waltz’s analysis.
- Balancing is a major structural response to concentrations of power.
- Neorealism shifted IR theory toward system-level analysis.
- Its central insight is that international structure strongly constrains state behaviour.