 After finishing his studies, he joined the Vatican diplomatic service in July 1955.He served in the nunciatures in India, Ireland, and Portugal.He was appointed counsellor of the apostolic delegation in the United States in June 1967, but as the nuncio in Ireland, Archbishop Giuseppe Sensi, was then transferred to the nunciature in Portugal, had to stay in Dublin until the following November, when he was named instead counselor of the nunciature in El Salvador, where he remained until the end of 1969, becoming then counselor of the nunciature in Argentina.