This Order enables the United Kingdom to cooperate with the International Residual Mechanism for Criminal Tribunals in the investigation and prosecution of persons accused of Mechanism crimes and the punishment of persons convicted of such crimes. The Mechanism was established by United Nations Security Council resolution 1966 (2010) to complete the tasks of the international criminal tribunals for the former Yugoslavia and Rwanda.
Link: The United Nations (International Residual Mechanism for Criminal Tribunals) Order 2018
Source: Legislation .gov.uk