Doctor of Laws, University Messina, Italy, 1953. Master in Comparative Law, Columbia University, 1955. Diploma, Academy International Law, The Hague, The Netherlands, 1956.
Doctor of Laws (honorary), University Windsor, Ontario, Canada, 1981. Doctor of Laws (honorary), St. Thomas Aquinas College, 1996. Doctor of Laws (honorary), St. John's University, 1998.
Joined Italian Foreign Service, 1956, attache directorate general for economic affairs North America desk, 1956-1958, 1st secretary directorate general for political affairs Soviet and Eastern European desk, 1963-1965, liaison officer with Parliament in Cabinet, 1965-1968. 1st vice consul Consulate General Italy, New York City, 1958-1961. 2nd secretary Italian Embassy, Moscow, 1961-1963, counsellor, 1st counsellor Paris, 1968-1974, minister counsellor Tokyo, 1974-1976.
Member Italian delegate United Nations General Assembly, New York City, 1965. Chief of cabinet to Honorary Amintore Fanfani Italian Senate, Rome, 1976-1980. Ambassador to Canada Ottawa, 1980-1985.
Ambassador and permanent representative of Italy North Atlantic Treaty Organization, Brussels, 1985-1991. Secretary general of executive committee for intelligence and security CESIS, 1991-1993. Permanent representative of Italy United Nations, New York City, 1993-1999.
Head, Italian delegate United Nations Security Council, New York, 1995-1996. First vice president Economic and Social Council, 1998-1999, president, 1999-2000. Vice president Ferrero International, Luxembourg, since 2000.
President Campiello National Literature Prize, Venice, 1999. Member United Nations Committee for Rights of the Child, Geneva, 1998-2001.
Married Claris Glathar, 1965. Children: Sebastiano, Marie Sol, William.