Orders, decorations, and medals of the Holy See of the Catholic Church by his authority as head of the Holy See and sovereign of the Vatican City State. Historically, membership in these orders was either conferred by Papal bulls not signed by the Pope or by apostolic letters signed by the Pope himself. Since the reforms of these orders in the beginning of the 20th century, the diplomas have been signed by the Cardinal Secretary of State. In general, "Papal orders of knighthood" refers to the five equestrian orders of the Holy See awarded directly by the Supreme Pontiff as head of the Catholic Church, Holy See and
Foreign relations of the Holy See job, which was vacant since the previous ambassador died in December 2007. According to press accounts in Argentina in January 2008, the country's nominee as ambassador to the Holy See, Alberto Iribarne, a Catholic, was rejected on the grounds that he was living with a woman other than the wife from whom he was divorced. Since the Holy See is legally capable of ratifying international treaties, and does ratify them, it has negotiated numerous bilateral treaties with states and it has been invited to participate – on equal footing with States – in the negotiation of most universal International law-making