The papacy’s role in international affairs is often underestimated. A recent example is Pope Francis’s participation in the 2015 negotiations leading to a détente between Cuba and the United States. It helped, of course, that Barack Obama was president and that Raúl Castro had replaced his brother Fidel in Havana; but it was Francis, building on the work of his predecessors who had maintained continuous relations with the Castro regime, who brought the two sides together, and who persuaded the United States to drop its sanctions against Cuba.