14.5 The Realist Worldview

The Realist Worldview

Realism is the oldest and most influential theoretical framework in international relations. It tries to explain why states compete, why wars happen, and why lasting peace is so hard to achieve. The core claim is straightforward: in a world with no global government, states must look out for themselves, and power is what keeps them safe.

Realist Worldview in International Relations

States are the primary actors. Realists treat states as sovereign, unitary, and rational entities. That means each state acts as a single decision-maker pursuing its own interests. Non-state actors like NGOs and multinational corporations exist, but realists see them as secondary players that operate within a system shaped by states.

The international system is anarchic. "Anarchy" here doesn't mean chaos. It means there's no central authority above states to enforce rules, settle disputes, or punish bad behavior. The United Nations can pass resolutions, but it can't force a powerful state to comply. Because of this, states must rely on self-help to ensure their survival and security.

Power drives state behavior. States aim to maximize their power relative to other states, and power is measured primarily through military and economic capabilities (military strength, GDP, technological capacity). A state's position in the international system depends on how much power it holds compared to its rivals.

Competition and conflict are the norm. Cooperation between states is possible, but realists argue it's always limited by the anarchic structure. States constantly seek advantages over one another in territory, resources, and influence, because today's ally could become tomorrow's threat.

Key Concepts of Political Realism

• Balance of power: States form alliances to prevent any single state from becoming dominant. NATO formed in part to counterbalance Soviet power, and the Warsaw Pact served as the Soviet response. When the balance shifts, states realign.
• Security dilemma: When one state builds up its military to feel safer, other states see that buildup as a potential threat and respond with their own buildup. The result can be an arms race that leaves everyone less secure than before. The nuclear weapons competition between the U.S. and Soviet Union is a classic example.
• Relative gains: Realists argue that states care less about how much they gain in absolute terms and more about how they fare compared to other states. In trade negotiations, for instance, a state might reject a deal that benefits both sides if the other side benefits more.
• National interest: States pursue policies that prioritize their own security, economic prosperity, and global influence. Realists see national interest as the fundamental guide for foreign policy decisions.

Critiques of realism are worth knowing for exams:

• It overemphasizes the state and underestimates non-state actors like international organizations and NGOs.
• It assumes states act as unitary actors, ignoring how domestic politics, public opinion, and leadership changes shape foreign policy.
• It's overly pessimistic about cooperation, struggling to explain successes like international treaties and global institutions.
• It doesn't adequately account for how norms, values, and institutions (human rights law, international courts) shape state behavior.

Branches of Realist Theory

Realism isn't a single theory. It has evolved into several distinct branches, each with a different emphasis.

• Classical realism (Hans Morgenthau): Traces conflict back to human nature. People are inherently power-seeking, and states reflect that drive. Morgenthau emphasized the balance of power as the central mechanism of international politics.
• Neorealism / structural realism (Kenneth Waltz): Shifts the focus from human nature to the structure of the international system. It doesn't matter whether leaders are good or evil; the anarchic system itself forces states to compete for power. What matters most is how power is distributed among states.
• Offensive realism (John Mearsheimer): Argues that states should maximize their power whenever possible and pursue regional hegemony. Great powers are always looking for opportunities to gain advantages over rivals because you can never be sure how much power is "enough" to be safe.
• Defensive realism (Stephen Walt): Argues that states primarily seek to maintain their current position rather than expand aggressively. States only seek more power when they face a direct threat. Unnecessary expansion can actually provoke other states and make you less secure.

The key distinction to remember: offensive realists say grab power whenever you can, while defensive realists say hold what you have unless threatened.

Game Theory in State Decisions

Game theory offers a way to model strategic interactions where each state's best choice depends on what the other state does.

Three building blocks of any game theory model:

1. Players: The actors making decisions (usually states)
2. Strategies: The choices available to each player (cooperate, defect, attack, negotiate, etc.)
3. Payoffs: The outcomes each player receives based on the combination of strategies chosen

The Prisoner's Dilemma is the most commonly used game theory model in IR. Two states must independently decide whether to cooperate or defect. If both cooperate, they get a good outcome. If both defect, they get a bad outcome. But if one defects while the other cooperates, the defector gets the best outcome and the cooperator gets the worst. Because each state fears being exploited, the dominant strategy is to defect, even though mutual cooperation would leave both better off.

This logic helps explain arms races (both sides would benefit from disarmament, but neither trusts the other to follow through), alliance formation, and trade negotiations. A zero-sum game is a related concept where one state's gain is exactly another state's loss, leaving no room for mutual benefit.

Polarity in Anarchic Systems

Polarity refers to how power is distributed among the major states in the international system. There are three main configurations:

• Unipolarity: One superpower dominates (the United States after the Cold War ended in 1991).
• Bipolarity: Two dominant powers compete (the United States and Soviet Union during the Cold War).
• Multipolarity: Three or more great powers coexist (the European system in the 19th century, with Britain, France, Prussia/Germany, Austria-Hungary, and Russia).

Polarity affects system stability, though realists disagree about which arrangement is most stable:

• Unipolarity is often considered the most stable because no peer competitor exists to challenge the dominant power. But some argue it breeds resentment and overreach.
• Bipolarity can be stable when the two powers balance each other, but it carries the risk of direct confrontation between them.
• Multipolarity is often considered the least stable because more great powers means more potential conflicts and a greater chance of miscalculation.

Realist Perspective on System Destabilization

Realists identify several mechanisms that can destabilize the international system:

• Security dilemma escalation: Defensive measures by one state trigger defensive responses from others, creating a spiral of increasing tension even when no state intended to be aggressive.
• Arms races: Competitive military buildups feed on mutual suspicion. The U.S.-Soviet nuclear arms race is the textbook example, where each side accumulated thousands of warheads trying to stay ahead.
• Power transitions: When a rising power begins to close the gap with the dominant state, the risk of conflict increases. The rising state may want to revise the existing order, while the established power may act to prevent that shift. Germany's rapid rise in the early 20th century and the outbreak of World War I illustrate this dynamic.
• Miscalculation and misperception: In an anarchic system with imperfect information, states can misread each other's intentions. The Cuban Missile Crisis (1962) nearly escalated to nuclear war in part because of misperceptions on both sides.
• Alliance entanglements: Alliance commitments can drag states into conflicts they didn't start. The web of alliances in Europe before World War I turned a regional crisis (the assassination of Archduke Franz Ferdinand) into a continental war.

Power Politics and Geopolitics

• Power politics is the practice of conducting international relations through the direct use of power. This includes military strength, economic coercion, and diplomatic pressure. States form alliances, issue threats, and sometimes use force to advance their national interests.
• Geopolitics examines how geography shapes international relations. Factors like access to natural resources, control of strategic locations (the Strait of Hormuz, the South China Sea), and territorial boundaries all influence military strategy, economic policy, and diplomacy.
• Sovereignty is the principle that states have supreme authority within their own borders. Realists view sovereignty as foundational to the international system. When sovereignty is challenged, whether through intervention, territorial disputes, or external interference, conflict often follows.
• Deterrence is the strategy of using threats or demonstrations of military power to prevent aggression. During the Cold War, nuclear deterrence (the idea that both sides would be destroyed in a nuclear exchange) helped prevent direct conflict between the U.S. and Soviet Union. Realists argue that credible deterrence is essential for maintaining stability in an anarchic world.