non-refoulement

Non-refoulement () is a fundamental principle of international law anchored in the 1951 Convention Relating to the Status of Refugees that forbids a country from deporting ("refoulement") any person to any country in which their "life or freedom would be threatened" on account of "race, religion, nationality, membership of a particular social group or political opinion". The only exception to non-refoulement according to the Convention Relating to the Status of Refugees are "reasonable grounds" of "danger to the security of the country" or "danger to the community of that country". Unlike political asylum, which applies only to those who can prove a well-grounded fear of political persecution, non-refoulement refers to the generic deportation of people, including refugees into war zones and other disaster locales.

Non-refoulement is generally seen as customary international law, where it applies even to states that are not parties to the 1951 Convention Relating to the Status of Refugees or its 1967 Protocol. It is debatable whether non-refoulement is a peremptory norm () of international law, where non-refoulement must always be applied without any adjustment for any purpose or under any circumstances (derogation). The debate over jus cogens nature of non-refoulement was rekindled following the September 11, 2001, terror attacks in the United States as well as other terrorist attacks in Europe.