Dr. Paolo Conversi graduated in Economics and Commerce from ‘La Sapienza’ University of Rome and in social sciences from the Pontifical Gregorian University. He then obtained a Ph.D. in social sciences from the Pontifical Gregorian University and a Ph.D. in economics from ‘Roma Tre’ University. After taking part in development projects in Mexico, Colombia and Bosnia Herzegovina, in 1999 he became an official of the Section for Relations with States of the Secretariat of State of the Vatican City. He has been a member of many Holy See delegations to various international meetings, including the VI NPT Review Conference (New York, 2002). Since 2004 he has been teaching ‘Human Ecology’ at the Faculty of Social Sciences of the Pontifical Gregorian University.