Vienna Declaration and Programme of Action
In international human rights law, disappearances at the hands of the state have been codified as "enforced" or "forced disappearances" since the Vienna Declaration and Programme of Action. For example, the practice is specifically addressed by the OAS's Inter-American Convention on Forced Disappearance of Persons. There is also some authority indicating that enforced disappearances occurring during armed conflict, such as the Third Reich's Night and Fog program, may constitute war crimes.