The Peace Palace in The Hague houses institutions associated with international law and peaceful dispute settlement. Image by Jiuguang Wang, licensed under CC BY-SA 2.0.
The English School is best understood as a school of thought about how states form an international society without a world government. It produced theories and concepts rather than one narrow theory of International Relations. Because sovereign states have no superior authority above them, the school accepts the realist claim that the international system is anarchic. At the same time, it argues that anarchy does not remove rules, institutions, shared expectations or moral arguments from world politics.
Its central question is practical: how can states preserve order while also making claims about justice? English School writers start from a world in which states remain competitive and morally divided, then ask how a limited set of institutions can make coexistence possible. International society exists when states see themselves as bound by common rules and participate in common institutions, even while they continue to disagree over power, interests and values.
Origins and Intellectual Context
The English School developed around the British Committee on the Theory of International Politics, created in 1959. Its scholars drew on history, law, philosophy and sociology rather than on a single scientific model of state behavior. For that reason, the school does not fit neatly into the usual “great debates” between realism, liberalism and later approaches.
The school is often described as a via media between realism and liberalism. From realism, it takes the problem of anarchy and the persistence of sovereign states. From rationalist traditions, it takes the idea that states can build rules that shape behavior. The via media label matters because it lets English School writers explain how power politics and rule-governed coexistence operate at the same time.
Martin Wight’s International Theory: The Three Traditions gave the school one of its main intellectual maps. Instead of treating one tradition as the whole truth of international politics, English School analysis often moves among three rival languages of international order:
- Realism is associated with Hobbes and Machiavelli. It emphasizes conflict, power and the insecurity that follows from the absence of a world sovereign.
- Rationalism is associated with Hugo Grotius. It emphasizes law, diplomacy and a society of states that can recognize obligations even without a world government.
- Revolutionism is associated with Kant. It looks beyond state coexistence toward humanity, universal moral claims and the possibility of a more solidarist world society.
System, International Society and World Society
English School theory distinguishes between an international system, an international society and a world society. These terms are close enough to be confused, but they point to different levels of shared life in world politics.
An international system exists when states interact and affect one another. War, bargaining and balancing can link states into a single field of action. At this thinner level, states may share little agreement over rules or values and still calculate against one another inside the same strategic environment.
An international society goes further. It exists when states recognize common interests, accept common rules and take part in common institutions. At this level, practices such as sovereignty, treaty obligation and diplomatic representation become more than habits of convenience. Shared rules can make a conflictual society possible when states treat some obligations as binding, or at least as standards that require justification when breached.
World society shifts the focus from states to humanity and to actors that cross borders. Human rights claims and cosmopolitan justice belong more naturally here than in a purely interstate frame. However, world society does not simply replace international society. It can support it, pressure it or conflict with it when moral claims made on behalf of individuals challenge rules built around sovereign states.
Hedley Bull and the Anarchical Society
Hedley Bull gave the English School its most influential formulation in The Anarchical Society, published in 1977. Bull argued that anarchy is unavoidable in a world of sovereign states, but anarchy is not the same thing as disorder. States can still create order when they share rules and institutions that make their conduct more predictable.
For Bull, order means a pattern of activity that sustains basic goals of social life. In international politics, those goals include limits on violence, respect for agreements and the preservation of states as independent political communities. Bull’s definition is deliberately modest: order exists when there is enough regularity for states to coexist and pursue their purposes without constant systemic breakdown.
Bull also treated justice as a central problem rather than as a decorative moral theme. He distinguished between three kinds of justice. Interstate justice protects principles such as sovereign equality and self-determination. Human justice focuses on the rights and welfare of persons. World justice asks whether the whole human community should be organized around broader moral standards.
The relationship among these forms of justice is unstable. A demand to protect human rights may challenge non-intervention. By contrast, a demand to preserve state sovereignty may protect weak states from domination while also shielding abusive governments. The English School is useful because it makes that tension visible before turning a moral claim into a policy recommendation.
Pluralism and Solidarism
The main internal debate within the English School is between pluralism and solidarism. Both approaches accept the idea of international society. They disagree over how thick that society is and how far its shared rules can legitimately reach.
Pluralists see international society as a limited arrangement among sovereign states. From this view, the first task of international society is to prevent domination and large-scale disorder. Because states disagree deeply over social and political values, pluralists warn against turning international society into a vehicle for ambitious moral projects that powerful states might enforce selectively.
Solidarists, by contrast, argue that international society can contain deeper shared values and more demanding obligations. They give more weight to human protection and to the legal position of individuals. In solidarist arguments, international society can sometimes act on behalf of wider human purposes as well as state coexistence, even without becoming a world state.
The divide is a difference of degree as well as principle. Pluralism emphasizes thin rules that let diverse states coexist. Solidarism emphasizes thicker rules that may let states and other actors pursue common moral purposes. The practical difficulty is that thicker rules often need enforcement, and enforcement can revive the problems of power and selectivity that pluralists fear.
Order Before Justice, or Justice Through Order?
This school is often associated with the claim that order is prior to justice. That claim is easy to misunderstand. It does not mean that justice is unimportant. Instead, it means that many forms of justice become fragile when the basic conditions of international order collapse.
Self-determination and sovereign equality depend on a world in which states recognize one another and accept some limits on coercion. Human rights protection also depends on institutions and political authority that can act with some regularity. If international society loses the ability to produce order, justice claims may remain morally compelling but become harder to implement without arbitrary force.
At the same time, order can become morally thin or politically defensive. A stable order may protect sovereign equality while tolerating severe injustice inside states. Therefore, English School analysis asks how much disorder international society should risk for a stronger justice claim, and how much injustice it should tolerate in the name of order.
Why the English School Matters
The English School remains useful because many diplomatic disputes concern more than material interest. They are disputes over which rules apply, who counts as a legitimate participant and which institutions have authority. The school gives readers a vocabulary for seeing those disputes as arguments about membership, obligation and legitimacy.
Recognition disputes show the point clearly. When states disagree over whether an entity should be treated as a state, they are debating membership in international society as well as power. Humanitarian intervention and responsibility-to-protect debates show another side of the same problem. They ask whether human protection can override non-intervention, and who should decide when that threshold has been crossed.
The approach also helps explain why international institutions matter even when they are weak. In practice, institutions rarely remove power politics from world affairs. Their importance lies in providing procedures, language and expectations through which states justify action and contest violations. Those practices do not guarantee compliance, but they shape the cost of breaking rules and the arguments available to defend or condemn conduct.
What the Framework Can Miss
The English School can understate material inequality if it treats international society as a shared moral framework without asking who wrote the rules and who benefits from them. Bull and Adam Watson’s The Expansion of International Society made expansion itself central to the story, but critics still ask whether the language of common rules can hide hierarchy. After all, many rules of international order emerged from European state practice, imperial expansion and unequal encounters.
The school can also be difficult to test in the way narrower causal theories are tested. It often works as a historical and interpretive framework rather than as a model that predicts specific outcomes. That is a limitation if the question is why one state made one decision at one moment; it is less of a limitation when the question is how a diplomatic order defines legitimacy, membership, obligation and acceptable conduct.
Later writers have tried to sharpen those categories. Barry Buzan’s From International to World Society?, for example, pushed English School theory to define world society more carefully and to explain how society is constituted. Overall, the enduring value of the school is that it keeps power, law and morality in the same frame without pretending that they always point in the same direction.