Technology
The Principle of Universal Jurisdiction in International Law
Quick fact
Unlike ordinary criminal law, which requires a link to the country (territory, nationality, or victim), universal jurisdiction allows any state to prosecute genocide, war crimes, crimes against humanity, and torture—even if the crime occurred far away and involved no nationals of that state.
Why this is interesting
Imagine a German court trying a Syrian official for atrocities committed in Syria, even though neither Germany nor the victims were involved. How is that possible?
Read the full explanation
Understanding The Principle of Universal Jurisdiction in International Law
Under normal criminal law, a country can only prosecute crimes that happen on its soil or involve its citizens. Universal jurisdiction is an exception: for the most serious international crimes, any state can step in. The idea is that these crimes are an attack on humanity as a whole, so every state has a duty to stop them. In practice, universal jurisdiction often is invoked when the country where the crime occurred is unwilling or unable to prosecute. For example, a former Chilean dictator was arrested in London (UK) on a Spanish warrant based on universal jurisdiction. This principle works through domestic laws: countries incorporate international crimes into their national codes, allowing their courts to hear cases with no traditional link. When a court does so, it must be able to assert jurisdiction and then hear the case, following its own procedural rules and international legal standards.
A deeper explanation
The legal basis of universal jurisdiction lies in treaties (such as the Geneva Conventions and the Convention Against Torture) and customary international law. These treaties explicitly require states to either prosecute or extradite individuals accused of grave breaches—the 'aut dedere aut judicare' principle. Customary law also allows universal jurisdiction for piracy, which was historically the first crime subject to it. But universal jurisdiction is controversial. States may misuse it for political purposes, leading to diplomatic disputes and wrongful prosecutions. To moderate this, many states impose safeguards like requiring the accused to be present (presence-based jurisdiction) or requiring a link to the state (like the victim being a national). The key issue is the balance between ending impunity and respecting state sovereignty. If every state claims universal jurisdiction, conflicts and forum-shopping can arise, which is why the principle is often applied only when the territorial state is unable or unwilling to act.