Liberal vs. Realist Conceptions of World Order

Why does the world hold together at all? There is no global government, no police force standing above sovereign nations, and yet international politics is not in a state of constant chaos. How we answer this question divides two of the most influential traditions in International Relations. Realists explain stability through power and the balance among states. Liberals offer a richer answer, arguing that order in the modern world rests on law, shared norms, institutions, and the rights of individuals – not just the calculations of governments. The difference between these two visions is captured neatly in the language each tradition uses: realists speak of international order, while liberals speak of world order. Understanding that distinction is the key to grasping how the two schools see global politics.

Two words, two worldviews: international order vs world order 🔗

The terms sound interchangeable, but in IR theory they carry very different meanings. The distinction was made famous by the English School scholar Hedley Bull in his classic work The Anarchical Society. For Bull, international order is the order of states, while world order is the order of mankind. International order concerns stability among sovereign governments. World order is broader: it concerns the wellbeing of human beings everywhere, regardless of which state they happen to live in.

This is more than a semantic point. Realists prioritise international order because, for them, the state is the central actor and its survival is the highest goal. Stability between states is what matters. Liberals argue that this is too narrow. A system in which great powers avoid war but millions of individuals suffer under repression or poverty cannot truly be called “orderly.” For liberals, genuine order must account for individual rights, justice, and prosperity – values that operate below and beyond the level of the state.

How realists understand order 🔗

The realist worldview begins with anarchy – the absence of any authority above sovereign states. In this environment, states can rely only on themselves for security. Order, when it exists, emerges from the distribution of power, especially the balance of power among great powers. When power is roughly balanced, no single state can dominate, and a fragile stability holds.

From this perspective, the realist school emphasises power, security, stability, and balance above all else in what it sees as the dangerous arena of international politics. Realists are deeply sceptical of grand visions of a peaceful, rules-based world. They worry that pursuing such utopian goals can produce the very wars and chaos they were meant to prevent. National interest, not moral principle, guides state behaviour, and the survival of the state is treated as the highest goal, leaving individuals and organisations with only limited power in the system.

How liberals understand order 🔗

Liberals reject the idea that order can come only from power politics. They argue that order can emerge from the complex interactions among international laws, shared norms, and multilateral institutions. Just as domestic societies achieve stability through the rule of law and functioning institutions rather than through brute force alone, the international system can do the same.

Interestingly, even Hedley Bull, who was sympathetic to the state system, argued that the system of sovereign states is not an obstacle to world order but its essential foundation. Liberals build on this insight differently. They contend that the rules and institutions states create can take on a life of their own, gradually constraining state behaviour and serving human ends that go beyond any single government’s interest. Order, in this view, is something societies construct and improve over time – not merely a temporary by-product of who happens to be strong.

The pillars of the liberal conception of world order 🔗

The liberal vision rests on several reinforcing ideas. Each one challenges a core realist assumption, and together they explain why liberals believe cooperation, not just competition, can define global politics.

Institutions and the rule of law 🔗

For liberals, international organisations like the United Nations, the World Trade Organization, and international courts are genuine sources of governance. They create binding rules, provide forums for peaceful dispute resolution, and lower the cost of cooperation. This is where liberals and realists clash most sharply. Realists typically view such institutions as little more than arenas where great powers pursue their interests, arguing that when stakes are high, states will ignore international law. Liberals counter that institutions reshape what states want and how they behave, making cooperation a stable, repeated pattern rather than a temporary convenience.

Democratic peace theory 🔗

One of liberalism’s most influential claims is that democracies rarely, if ever, go to war with one another. The roots of this idea reach back to the philosopher Immanuel Kant, whose essay Perpetual Peace argued that republics with accountable governments and free citizens would be far less inclined to wage war. The intuition is straightforward: leaders who must answer to voters, and who govern through open debate and shared institutions, find peaceful means of resolving disputes with similar states. Promoting democracy, in this view, is also a way of promoting peace.

Economic interdependence 🔗

Liberals have long argued that trade fosters peace. When economies are deeply linked, war becomes enormously costly because it destroys the very relationships that generate prosperity. This insight was given modern shape by Robert Keohane and Joseph Nye in their 1977 book Power and Interdependence. They argued that networks of interdependence would constrain the use of force across most issue areas, drastically reducing the utility of military power in world politics.

Their concept of complex interdependence directly challenged the realist picture. It described a world connected by multiple social and political relationships, where security and force matter less. Keohane and Nye identified three defining conditions: multiple channels of contact between societies, the blurring of the line between “high” politics (security) and “low” politics (economics), and the declining usefulness of military force among interdependent nations. In such a world, the dividing line between domestic and foreign policy fades, and cooperation can become a positive-sum game in which all sides gain.

A broader agenda: human rights, justice, and the environment 🔗

Perhaps the clearest difference between the two traditions lies in what each considers a legitimate concern of global politics. Realists tend to focus narrowly on security and survival. The liberal conception of world order is far more inclusive, integrating economic development, environmental protection, and human rights as central components of international stability rather than as soft, secondary issues.

This reflects the deeper liberal commitment to the individual. Because world order is ultimately about the order of mankind, the way states treat their own citizens becomes a matter of international concern. Concepts such as human rights protection and, more controversially, the responsibility to protect populations from atrocities flow naturally from this premise. Environmental governance fits the same logic: climate change, by its nature, cannot be solved by any single state acting alone and demands cooperative, rules-based frameworks. Liberals see these challenges not as zero-sum competitions but as shared problems requiring collective solutions.

A note on neo-liberal refinement 🔗

It is worth distinguishing classical liberalism from its later refinement, sometimes called neo-liberalism or neo-liberal institutionalism. Building on the work on interdependence, Keohane developed an approach that accepted a key realist premise – that states are rational, self-interested actors operating under anarchy – yet reached a strikingly different conclusion. Neo-liberals argue that even self-interested states will cooperate when institutions reduce uncertainty, provide information, and make cheating costly. Crucially, they hold that states are more concerned with absolute gains rather than relative gains, meaning they ask “how much do I benefit?” rather than “do I benefit more than my rival?” This subtle shift makes sustained cooperation possible even in a world without world government.

The realist critique and the limits of the liberal vision 🔗

The liberal conception of world order is powerful, but it has serious critics. Realists like John Mearsheimer argue that a fully liberal international order is fragile and historically rare. In his analysis, a liberal international order is possible only under unipolarity – a moment when one power dominates the system. Once the world returns to multipolarity, with several great powers competing, security competition reasserts itself and the liberal project strains under the pressure.

Other critics point out that the liberal order, in practice, has often been expansionist, seeking to spread its values worldwide and generating resentment and conflict in the process. There is also the charge that “world order” can become so broad a concept that it loses precise meaning. These criticisms do not necessarily disprove the liberal vision, but they remind us that order – of any kind – is never guaranteed and always has to be maintained through deliberate effort.

Why this debate matters for emerging powers 🔗

For a rising power that engages intensively with the world economy and global institutions, this theoretical debate has very practical stakes. A country navigating climate negotiations, trade agreements, and security partnerships is constantly choosing how much weight to give to institutions and cooperation versus the hard logic of national power. In climate diplomacy, for instance, the emphasis on cooperative frameworks built around principles of justice and “common but differentiated responsibilities” reflects classic liberal world-order thinking – treating environmental protection as a shared global responsibility rather than a contest between rivals.

At the same time, decisions about defence, border security, and strategic autonomy often echo realist instincts about self-reliance in an uncertain world. Most states, in practice, live somewhere between the two visions. Recognising which logic is at work in a given situation – international order or world order – helps make sense of choices that might otherwise seem contradictory.

What do you think? Is genuine “world order” – one built on rights, justice, and shared institutions – an achievable goal, or is it ultimately dependent on the power of whoever sits at the top of the system? And when a state’s national interest collides with its commitment to global rules and human rights, which conception of order should win out?

References

1. https://www.teenink.com/reviews/book_reviews/article/1153281/The-Anarchical-Society-A-Study-Of-Order-In-World-Politics-By-Hedley-Bull
2. https://www.geopoliticalmonitor.com/the-mirage-of-the-liberal-world-order/
3. https://www.researchgate.net/publication/345820386_The_Realist_and_Liberal_Positions_on_the_Role_of_International_Organizations_in_Maintaining_World_Order
4. https://link.springer.com/book/10.1007/978-1-349-24028-9
5. https://www.cato.org/publications/dangers-misunderstanding-economic-interdependence
6. https://www.e-ir.info/2013/03/08/joseph-nye-on-soft-power/
7. https://www.e-ir.info/2011/09/01/liberal-institutionalism-an-alternative-ir-theory-or-just-maintaining-the-status-quo/
8. https://direct.mit.edu/isec/article/43/4/7/12221/Bound-to-Fail-The-Rise-and-Fall-of-the-Liberal