On the world stage, the Holy See acts as both a religious and a political actor. As the head of over 1.2 billion Catholics, the pope is a widely recognized spiritual authority. Politically, the Holy See maintains diplomatic relations with other states and actively participates in international organizations such as the United Nations. A Living Tradition examines the normative sources and the dilemmas underpinning papal diplomacy. It does so in the context of four diverse case studies: the...