The idea of a legal right to truth is distinct from the pre-existing understanding of the importance of establishing the truth about what happened in a case of human rights violation.[1] In 1977, Protocol I to the Geneva Conventions enshrined a right for families of people killed in armed conflicts to find out what happened to their relatives.[9] A 1993 conference at the Catholic Institute for International Relations addressed the right to truth.[10] The right to truth has been recognized in international soft law instruments such as the United Nations Principles to Combat Impunity (2005)[11][12] and UN General Assembly Resolution 60/147, as well as by the 2011 appointment of a United Nations Special Rapporteur on the Promotion of Truth, Justice, Reparation and Guarantees of non-Recurrence.[11] In 2006, the United Nations Human Rights Commission determined that there was an "inalienable and autonomous right" to truth.