Can There Be Real Law Without a World Police?
Who Punishes the Punishers?
Imagine you and your friends form a club. You make a rule: no grabbing anyone else’s stuff. But there’s no teacher, no principal — you’re on your own. If someone grabs your lunch, who punishes them? Is your club rule even a real rule?
That is the puzzle of international law. International law is the body of rules that countries are supposed to follow: don’t invade your neighbor, don’t commit genocide, keep your promises in treaties. But the world has no government. No world police officer can arrest a country that breaks the law. So is international law actually law?
For a long time, many philosophers answered no. In the 19th century, John Austin (1790–1859) argued that law is a command from a sovereign — a ruler or institution with the power to punish you if you disobey. A command without a threat, he thought, is not law at all. Since the world has no single sovereign, Austin and his followers called international law mere “positive morality” — polite words, not real law.
But people who actually work with international law — lawyers, judges, diplomats — still call it law. So who is right?
Hart’s Verdict: It’s Law, but Primitive Law
One of the most famous answers came from the British legal philosopher H.L.A. Hart (1907–1992) in his book The Concept of Law. Hart didn’t completely deny that international law is law. But he believed it was “primitive” law — like the simple rules of a small village long ago, not like the sophisticated legal system of a modern country.
To understand this, you need Hart’s key idea: a legal system has two kinds of rules. Primary rules tell you what you must or must not do (do not steal, keep your contracts). Secondary rules are rules about those rules — how to make them, change them, or decide when they’ve been broken. The most important secondary rule is the rule of recognition: the ultimate test that officials use to figure out what counts as law in their system. In the United States, for example, the rule of recognition points to the Constitution and the decisions of the Supreme Court.
Hart argued that international law has plenty of primary rules — most countries, most of the time, obey them. But he thought it lacked a proper rule of recognition and the full set of secondary rules. There is no world constitution, no single supreme court, and no clear formula that everyone accepts for what makes a rule part of international law. So international law resembles the law of a small, tight-knit group that gets by with just primary obligations — “primitive” law.
Not everyone was happy with that label. A primitive village, Hart said, would be held together by kinship and shared belief. But the world’s nearly 200 countries don’t share one culture, one religion, or one language. Calling that community “primitive” doesn’t quite fit. Still, Hart’s challenge stuck: does international law have the machinery that turns a set of rules into a genuine legal system?
But Almost Everyone Follows the Rules Anyway
If there is no world police, why do countries obey international law at all? The international lawyer Louis Henkin (1917–2010) gave a famous answer: “almost all nations observe almost all principles of international law and almost all of their obligations almost all the time.”
Think about your own club again. Even without a supervisor, most kids probably follow the rule because they want the club to work, they don’t want a bad reputation, or they believe the rule is fair. Countries are similar: they follow international law because they want stable trade, peaceful borders, and a reputation as reliable partners. Breaking the rules can bring retaliation, loss of trust, or even being shut out of cooperation — a process some philosophers call outcasting.
Philosophers like Joseph Raz (1939–2022) go further. They argue that law’s real job is not to punish but to guide behavior. Imagine a “society of angels” — perfectly good beings who never want to do wrong. They would still need rules to coordinate their actions: which side of the sky to fly on, how to share resources. Those rules would be law even without any punishment. According to this view, international law is not defective because it lacks a world police; punishment is just a backup plan for when guidance fails.
The Consent Puzzle: Did You Agree?
Many people, including some judges on the International Court of Justice, say that international law rests on state consent — a country is only bound because it chose to agree. Treaties clearly work this way: if a country doesn’t sign a treaty, it isn’t bound by it. But is consent the whole story?
Hard cases come from customary international law. Custom forms when many countries act a certain way (the objective element) and they accept that behavior as legally required — a mental state called opinio juris. Once a custom is established, it can bind even countries that never helped create it. When a new state emerges, it is automatically bound by existing customs on the use of force or diplomatic immunity, even though it never had a chance to consent.
Even trickier are jus cogens rules — peremptory norms that no country may ever violate. The prohibition of genocide, torture, and apartheid are examples. International law does not let a country simply opt out of these, consent or not. Hart and others saw this as a problem for consent theories: if law ultimately depends on agreement, how can a rule bind everyone, no matter what they say?
These examples don’t prove that international law lacks legal character. But they do show that its binding force can’t be reduced to a simple promise between states. As Hart put it, the “general theory that all international obligation is self-imposed” doesn’t fit the facts.
Why This Fight Matters to You
So is international law law or not? Today, most philosophers and lawyers answer yes — but they accept that it is a different kind of legal system, one that grows through custom, treaties, and shared principles rather than from a single sovereign. Hart’s question, however, never fully disappears. Every time a powerful country ignores a ruling or a war crime goes unpunished, the worry returns: can law without a world government really protect anyone?
This isn’t an abstract debate. When the Nazi leaders were put on trial at Nuremberg after World War II, some critics argued that their acts — however monstrous — were not clearly against any international law at the time. The response was that some acts are so obviously evil that no one can claim surprise at being punished for them. Since then, the world has built the International Criminal Court and dozens of human rights treaties. But those institutions still struggle to enforce their rulings against the strongest countries.
The question of whether international law is real law is really a question about justice: can we hold powerful wrongdoers to account? Can a rule system survive without a world police? Your own sense of fairness — whether a club rule counts, whether a new kid must follow old traditions — is where this deep philosophical puzzle begins.
Think about it
- If a group of friends makes a rule that no one can eat the last cookie, but no one is punished for breaking it, is that a real rule? Why or why not?
- Powerful countries sometimes ignore international rules and get away with it. Does that mean international law is not law at all — or is it still law, just like a school rule some kids break?
- Can you be bound by a rule you never agreed to, like a new student having to follow a school’s tradition? Is that fair? Does it matter if the rule is against bullying?
