Ex injuria jus non oritur (Latin for "law (or right) does not arise from injustice") is a principle of international law. The phrase implies that "illegal acts do not create law". Its rival principle is ex factis jus oritur, in which the existence of facts creates law. See also Ex factis jus oritur Facts on the ground Fait accompli Status quo ante bellum Odious debt Uti possidetis References International law Legal rules with Latin names Giuliana Ziccardi Capaldo (1977) Le Situazioni Territoriali Illegittime nel Diritto Internazionale/Unlawful Territorial Situations in International Law. Editoriale Scientifica