Professor of International Law and Organization at the Institute of Law, Pontifical Lateran University, where he also teaches European Union Law.
He is member, as Legal Adviser, of the Delegation of the Holy See to conferences and meetings of the United Nations, FAO, IFAD, and Council of Europe.
He participates at the UN World Conference on Human Rights (1993) and Diplomatic Conference on the Establishment of the International Criminal Court (1998).
Some works on International Law and Human Right issue: I diritti umani nelle relazioni internazionali: la normativa e la prassi delle Nazioni Unite, Roma 1997; Human Rights, People Rights. Paths of Reflections, Rome 2002; Cooperazione e Sviluppo. Le regole internazionali, Bologna 2005; Il diritto della Comunità internazionale. Principi e regole per la governance globale, (Roma 2010); and Codice per le discipline internazionalistiche (CD rom), Roma 2010.