124. States' power to derogate from human rights obligations.

International human rights treaties typically permit states parties to derogate from their obligations thereunder during time of war or other public emergency threatening the life of the nation1: in the United Kingdom, derogation from certain provisions of the European Convention on Human Rights2 is permitted both by the Convention and by statute3. A derogation signals a departure from Convention standards during emergency situations; and it is accepted that extraordinary measures impacting on otherwise guaranteed rights, or going beyond permissible limitations on rights, may sometimes be unavoidable