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 rules, institutions, shared expectations and moral arguments still operate inside anarchy. Accordingly, the school treats order as a political achievement rather than as a natural condition of anarchy.
Its central question is practical: how can states preserve order while still making claims about justice? English School writers start from a world in which states remain competitive and morally divided. They 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. In other words, international society is not harmony; it is a disciplined way of managing disagreement among states that continue to defend separate interests. The bond is limited because states 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 gives English School writers a way to explain how power politics and rule-governed coexistence operate at the same time.
This method makes the school less interested in predicting one decision than in explaining the vocabulary of order. Its evidence often comes from diplomatic practice, legal argument, institutional history and recurring disputes over recognition, intervention and obligation. That emphasis gives the English School a different use from narrower causal theories: it explains how states describe acceptable conduct and how other states contest those descriptions.
In this respect, the approach explains why English School writing often reads differently from parsimonious theory. It asks what claims actors can plausibly make inside a society of states, how rules survive disagreement, and why states still argue about legitimacy when enforcement is uneven. The answer is usually institutional rather than psychological. States may pursue interests, but they pursue them through inherited languages of sovereignty, treaty obligation, recognition and legitimate force. Those languages shape the costs of using power and the justifications available afterward.
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. World society interacts with international society in several ways. It can support it, pressure it or conflict with it when moral claims made on behalf of individuals challenge rules built around sovereign states.
English School writers often use “primary institutions” to name durable practices that organize relations among states. These are not organizations in the ordinary sense. Primary institutions such as sovereignty, diplomacy and international law give international society its operating rules. By comparison, the balance of power, great-power management and war organize the conditions under which states manage coercion. Sovereignty identifies who can claim legal authority. Diplomacy supplies regular channels for communication and bargaining. International law gives states a language for obligation and breach. Balance-of-power practices and great-power management try to keep conflict from destroying the system. War remains an institution in Bull’s sense because states surround force with rules, justifications and limits, even when those limits are violated. International order depends on practices that states recognize, use and contest over time.
Hedley Bull and the Anarchical Society
Hedley Bull gave the English School its most influential formulation in The Anarchical Society. The book was 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.
Moreover, Bull 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 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, in turn, 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.
This vocabulary also explains why arguments continue after a legal rule is breached. States may condemn a violation, deny the label, invoke an exception or claim that another principle has priority. The dispute then becomes part of the institution’s operation because it tests which justifications other states will accept.
The same logic applies to institutional reform debates. Calls to change the Security Council, expand human-rights enforcement or reinterpret non-intervention are rarely only technical proposals. They ask whether the society of states should remain thin enough to protect sovereign diversity or become thick enough to pursue stronger shared purposes. English School analysis makes that choice explicit without assuming that either side can escape the costs of power, enforcement and disagreement.
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.
For this reason, the approach helps explain why international institutions can shape behavior even when they are weak. In practice, institutions rarely remove power politics from world affairs. They provide procedures, language and expectations through which states justify action and contest violations. Compliance remains uncertain, but those practices 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, however, can 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.