Article 1

a Head of State, including any member of a collegial body performing the functions of a Head of State under the constitution of the State concerned, a Head of Government or a Minister for Foreign Affairs, whenever any such person is in a foreign State, as well as members of his family who accompany him;

any representative or official of a State or any official or other agent of an international organization of an intergovernmental character who, at the time when and in the place where a crime against him, his official premises, his private accommodation or his means of transport is committed, is entitled pursuant to international law to special protection from any attack on his person, freedom or dignity, as well as members of his family forming part of his household;