

Since then, the notion of crimes against humanity has evolved under international customary law and through the jurisdictions of international courts such as the International Criminal Court, the International Criminal Tribunal for the former Yugoslavia and the International Criminal Tribunal for Rwanda.

Other scholars point to the declaration issued in 1915 by the Allied governments (France, Great Britain and Russia) condemning the mass killing of Armenians in the Ottoman Empire, to be the origin of the use of the term as the label for a category of international crimes. Some scholars point to the use of this term (or very similar terms) as early as late eighteenth and early nineteenth century, particularly in the context of slavery and the slave trade, and to describe atrocities associated with European colonialism in Africa and elsewhere such as, for example, the atrocities committed by Leopold II of Belgium in the Congo Free State. It is not clear in which context the term “crimes against humanity” was first developed. Crimes Against Humanity Background United Nations Transitional Authority in Cambodia (UNTAC).
