Professor of Theoretical Physics of the Department of Physics, University of Rome "La Sapienza" (former Secretary General of Pugwash Conferences on Science and World Affairs, Italy)
1982 -1992 - Member of the Governing Board of the Stockholm International Peace Research Institute (SIPRI). 1989 - 1997 - Secretary General of the Pugwash Conferences on Science and World Affair. 1997 - 2002 - Chairman of the Pugwash Council. 2002 - present time - Member of the Pugwash Council.
On behalf of Pugwash - winning of the 1995 Nobel Peace Prize, jointly assigned to Joseph Rotblat and to Pugwash "for their efforts to diminish the part played by nuclear arms in international politics and in the longer run to eliminate such arms.