Philosophy
Political Realism in International Relations: Power over Morality
Quick fact
Thucidides, the ancient Greek historian, is considered the father of political realism. In his account of the Peloponnesian War, the Athenians famously told the Melians that 'the strong do what they can and the weak suffer what they must'—a brutal summary of the realist worldview.
Why this is interesting
Why do nations sometimes stand by while atrocities happen? Why do alliances shift overnight? The answer, realists argue, lies in a simple truth: in the jungle of world politics, might often makes right.
Read the full explanation
Understanding Political Realism in International Relations: Power over Morality
Political realism is a way of understanding how states behave toward each other. Unlike in domestic politics, there is no global government to enforce laws or settle disputes. Realists call this condition 'anarchy.' Because of anarchy, each state must look out for its own survival above all else. This means that the 'national interest'—often defined in terms of power—trumps moral principles, promises, or ideals. Think of a schoolyard without a teacher: the strongest kids get to set the rules. States, realists say, act the same way. They prioritize security and power, form alliances when convenient, and break promises when it serves them. This doesn't mean realists are immoral; they just believe that in a world without guaranteed protection, morality cannot be the primary guide for state action.
A deeper explanation
Realism assumes that states are the main actors in international relations and that they act rationally to maximize their own power. Power is the currency of international politics: it determines who survives and who gets dominated. Moral principles, such as human rights or justice, are often used as rhetoric, but realists argue that states only commit to them when they align with self-interest. This is evident in the phenomenon of the 'security dilemma': when one state arms itself for defense, others perceive a threat and arm themselves too, leading to an arms race and mutual insecurity. Realists like Hans Morgenthau and Kenneth Waltz built elaborate theories on this foundation. Morgenthau emphasized human nature's lust for power, while Waltz focused on the anarchic structure of the system that forces states to compete. Either way, the conclusion is the same: morality takes a back seat to power in international affairs. This is why treaties are broken, why the powerful dominate the weak, and why idealistic attempts to create world peace often fail.