Other associations for international law and foreign policy.
Under-Secretary-General for Legal Affairs & The Legal Counsel, Office(s) of Legal Affairs, United Nations since 1983. Director-General, Principal Legal Advisor, Legal Department, Federal Foreign Office, Federal Representative of Germany, 1976-1983. Head of International Law Section, various other positions in Legal Department, Federal Foreign Office, 1962-1976.
Rch Fellow, Max Planck Institute of International & Foreign Public Law, Germany, 1960-1962.