Cardinal Leonardo Sandri is Prefect of the Congregation for the Oriental Churches and Grand Chancellor of the Pontifical Oriental Institute. In 1974 he served at the nunciature in Madagascar. From 1977 to 1989, he worked at the Secretariat of State. In 1989 he was posted to the United States as counsellor at the nunciature and served as papal representative at the Organization of American States. He was ordained a bishop on 11 October 1997. On 1 March 2000 he was appointed Apostolic Nuncio in Mexico and later, on 16 September, Substitute for General Affairs of the Secretariat of State. He was a President Delegate of the Special Assembly for the Middle East of the Synod of Bishops in October 2010.