International humanitarian law

International humanitarian law (IHL) is the law that regulates the conduct of war (jus in bello). It is that branch of international law which seeks to limit the effects of armed conflict by protecting persons who are not participating in hostilities, and by restricting and regulating the means and methods of warfare available to combatants. IHL is inspired by considerations of humanity and the mitigation of human suffering. "It comprises a set of rules, established by treaty or custom, that seeks to protect persons and property/objects that are (or may be) affected by armed conflict and limits the rights of parties to a conflict to use methods and means of warfare of their choice". It includes "the Geneva Conventions and the Hague Conventions, as well as subsequent treaties, case law, and customary international law." It defines the conduct and responsibilities of belligerent nations, neutral nations, and individuals engaged in warfare, in relation to each other and to protected persons, usually meaning non-combatants. It is designed to balance humanitarian concerns and military necessity, and subjects warfare to the rule of law by limiting its destructive effect and mitigating human suffering.

Serious violations of international humanitarian law are called war crimes. International humanitarian law, jus in bello, regulates the conduct of forces when engaged in war or armed conflict. It is distinct from jus ad bellum which regulates the conduct of engaging in war or armed conflict and includes crimes against peace and of war of aggression. Together the jus in bello and jus ad bellum comprise the two strands of the laws of war governing all aspects of international armed conflicts.

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