Non-refoulement is a principle of the international law, i.e. of customary and trucial Law of Nations which forbids the rendering a true victim of persecution to their persecutor; persecutor generally referring to a state-actor (country/government). Non-refoulement is a key facet of refugee law, that concerns the protection of refugees from being returned to places where their lives or freedoms could be threatened. Unlike political asylum, which applies to those who can prove a well-grounded fear of persecution based on membership in a social group or class of persons, non-refoulement refers to the generic repatriation of people, generally refugees into war zones and other disaster areas. Non-refoulement is a jus cogens (peremptory norm) of international law that forbids the expulsion of a refugee into an area, usually their home-country, where the person might be again subjected to persecution.