Keyu v. Secretary of State for Foreign and Commonwealth Affairs (U.K. Sup. Ct.)

On November 25, 2015, the U.K. Supreme Court dismissed a case in which the British Secretaries of State for Foreign Affairs and Defense failed to hold a public inquiry into an atrocity committed in 1948 by British troops in the British protectorate of Malaya, today Malaysia. The case is of particular interest because it concerns the obligations of states for atrocities committed in the past, before their obligations under the European Convention on Human Rights (European Convention) or a comparable treaty, entered into force. Whereas the principle of the nonretroactivity of treaties protects a state from responsibility for acts committed before the human rights treaty entered into force for that state, the issue in this case was whether the state nonetheless had an obligation to investigate the crimes of the past.