Definition
War crimes are serious violations of international humanitarian law committed during armed conflict — wilful killing of civilians or prisoners, torture, taking of hostages, attacks on protected persons or objects, the use of prohibited weapons, sexual violence as a method of warfare, and the destruction of property not justified by military necessity. They sit alongside genocide and crimes against humanity in the family of "core international crimes."
The modern codification runs from the Hague Conventions of 1899 and 1907, through the Geneva Conventions of 1949 and their Additional Protocols, to the Rome Statute that established the International Criminal Court in 1998. The Nuremberg and Tokyo tribunals after the Second World War, and the ad-hoc tribunals for the former Yugoslavia and Rwanda in the 1990s, built the case law that gives the category practical force.
Why it matters
How it works
A war-crimes prosecution requires three things: an armed conflict (international or non-international), an act on the prohibited list, and a sufficient link between act and conflict. Investigators reconstruct chains of command, gather forensic and survivor evidence, and apply doctrines like superior responsibility and joint criminal enterprise to reach beyond the foot-soldier. Trials are usually long, expensive, and depend on cooperation from states that may have no political appetite to deliver it.
Criminologically, war crimes raise the awkward questions of state crime in their starkest form. The same act — bombing a hospital, executing a prisoner — is treated as routine when committed by the winning side and as the gravest of offences when committed by the losing one. Scholars in critical criminology and transitional justice study not only the crimes but the politics of which atrocities become legible as crimes and which are written out of the record.