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Realism, Neo-Realism, and Critical Security in World Politics

~12 min read 6 sections Politics · World Politics
Abstract

This paper examines the evolution of international security theory from the Cold War to the globalized post-9/11 world. It analyzes three major theoretical frameworks — classical realism, neo-realism, and critical security theory — tracing their core assumptions about state behavior, power, anarchy, and cooperation. Drawing on the work of Morgenthau, Waltz, and critical theorists, the paper evaluates how each paradigm accounts for the changing nature of international relations, including the rise of non-state actors, economic interdependence, and humanitarian concerns. The paper concludes that no single theory fully explains contemporary international security, and that a balance approach drawing on critical security offers the most viable framework for the early twenty-first century.

Key Takeaways
  • Introduction: The Shifting International Order: Post-Cold War shift from bipolarity to hegemonic globalization
  • Classical Realism and the State-Centric View: Realism's core assumptions about power, anarchy, and statecraft
  • Neo-Realism and Structural Theory: Waltz's structural departure from classical realist tradition
  • Critical Security and Human Security Frameworks: Post-Cold War challenge to state-centric security paradigms
  • Competing Theories and the Post-9/11 World: Applying rival theories to post-9/11 international conflicts
  • Conclusion: Cooperation and the Future of International Security: Critical security balance as best twenty-first century approach
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What makes this paper effective

  • The paper systematically compares three distinct theoretical traditions — classical realism, neo-realism, and critical security — using a clear progression from foundational to more contemporary frameworks, which gives the argument a logical arc.
  • It grounds abstract theoretical claims in concrete historical context (Cold War, post-9/11, globalization), making the analysis accessible and relevant beyond purely academic discussion.
  • The paper acknowledges the limitations of each theory, particularly noting that no single paradigm fully explains contemporary international security, which demonstrates intellectual honesty and analytical maturity.

Key academic technique demonstrated

The paper uses comparative theoretical analysis as its core method, placing realism, neo-realism, and critical security theory in dialogue with one another. By identifying shared assumptions (e.g., anarchy, state primacy) and then highlighting where each theory diverges, the author demonstrates how competing frameworks can each illuminate different dimensions of the same phenomenon — a technique central to international relations scholarship.

Structure breakdown

The paper opens with a historical overview of the post-Cold War international order before defining the key theoretical lens. It then moves sequentially through classical realism, neo-realism, and critical security theory, devoting a section to each. A synthesizing section applies these frameworks to the post-9/11 context, and the conclusion advocates for a balance-oriented critical security approach as most suited to twenty-first century global politics. The reference list follows standard academic format with author-date citations throughout.

Essay 2,252 words

Introduction: The Shifting International Order

With the end of the Cold War and the bipolar global order, an "international community" — as portrayed by increased transnational cooperation and globalization — has evolved. However, the integrity of this community depends on the actions of each individual member. Prior to 1989, the two great powers of the world, the United States and the Soviet Union, countered each other, creating a balance of power. This, in turn, polarized other states that fell under each respective power's umbrella of security and economic stability. After the collapse of the Soviet Union, however, the power of the United States led to hegemonic stability.

During the Cold War, the United States used "national security" as justification for its actions in the international arena. National security was used by internationalists to advocate increased American involvement in international affairs, yet it was also the reason isolationists promoted self-reliance and separation from global issues. If there are no restrictions on states' military capabilities, the state with military superiority will dominate all facets of global affairs — both political and economic. The economic stage is a zero-sum game, and without cooperative regulation the disadvantaged developing world would suffer at the hands of developed nations (Viotti and Kauppi 2006).

In the contemporary world, states' international agendas are no longer dominated by military security. Policies that are considered domestic now affect matters on a global basis. For example, despite U.S.-based multinational corporations' independence from American laws through international operations, any restrictions imposed upon them by the U.S. government could adversely affect that corporation's interests in another country. This may lead to economic suffering even though the policy is applied domestically within the United States. This change is germane when viewing the world through the theoretical lens of international relations, specifically through the paradigms of realism, neo-realism, and critical security (Nye 2006).

5 Sections Hidden · 1,500 words
Classical Realism and the State-Centric View520 words
Since the end of World War II, realism has dominated the field of international relations. As a distinct school of thought, realism places its emphasis on…
Neo-Realism and Structural Theory310 words
Neo-realism is led by Kenneth Waltz. His seminal work, Theory of International Politics (1979), is referred to…
Critical Security and Human Security Frameworks340 words
The approach to international relations, like most human endeavors, requires evolution and self-criticism to remain viable through time. Human security and critical security, for instance, are a post-revisionist review…
Competing Theories and the Post-9/11 World200 words
The question then becomes: which approach best explains the elements of international security? As with most complex problems, the answer is variable. Explaining international…
Conclusion: Cooperation and the Future of International Security130 words
In a multicultural world there is now a plurality of actors. The size of a state's army is no longer the basis…

References

Baldwin, D. 1993. Neorealism and Neoliberalism. Columbia University Press.

Bridge, M., and R. Stevens. 2001. Cross Border Security and Insolvency. Oxford.

Carr, E. H. 2001. The Twenty Years' Crisis 1919–1939: An Introduction to the Study of International Relations. Palgrave-Macmillan.

Collins, A., ed. 2007. Contemporary Security Studies. Oxford University Press.

Cox, R. 1992. "Multilateralism and World Order." Review of International Studies 18(2): 161–80.

Dannreuther, R. 2007. International Security: The Contemporary Agenda. Polity.

Jervis, R. 2008. "Robert Jervis Interview." Theory Talks. http://www.theory-talks.org/2008/07/theory-talk-12.html

Keohane, R. 1986. Neorealism and Its Critics. Columbia University Press.

Krause, K. 1998. "Critical Theory and Security Studies." Cooperation and Conflict 33(3): 298–333.

McCormack, T. March 26, 2008. "What Is Critical about Critical Security Theory?" Paper presented at the Annual Meeting of the ISA Convention, San Francisco.

Mearsheimer, J. 2003. The Tragedy of Great Power Politics. Norton.

Morgenthau, H., et al. 2005. Politics Among Nations. McGraw-Hill.

Neumann, I. 1997. The Future of International Relations: Masters in the Making. Routledge.

Nye, J. 2006. Understanding International Conflicts. Longman.

Rose, G. 1998. "Neoclassical Realism and Theories of Foreign Policy." World Politics 51(1): 144–72.

Viotti, P., and M. Kauppi. 2006. International Relations and World Politics: Security, Economy, Identity. Prentice Hall.

Waltz, K. 2008. Realism and International Politics. Routledge.

Waltz, K. 1979. Theory of International Politics. McGraw-Hill.

Williams, M., ed. 2008. Realism Reconsidered: The Legacy of Hans Morgenthau in International Relations. Oxford University Press.

Key Concepts in This Paper
Balance of Power State Anarchy Classical Realism Neo-Realism Critical Security Human Security Hegemonic Stability Structural Theory Globalization Power Politics
Cite This Paper
PaperDue. (2026). Realism, Neo-Realism, and Critical Security in World Politics. PaperDue. https://www.paperdue.com/study-guide/realism-neo-realism-critical-security-international-19988

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