ICRC IHL Databases — the laws of war, catalogued

The International Committee of the Red Cross maintains a free database of international humanitarian law treaties, the customary rules distilled from state practice, and how individual countries have implemented them domestically — a genuinely unique resource, since "customary law" is otherwise scattered across decades of state conduct rather than written down in one place.

Citation: 'ICRC IHL Databases' (International Committee of the Red Cross) https://ihl-databases.icrc.org/ accessed 16 September 2026.