Book excerpt: In 2020, the Vatican opened its archives for the pontificate of Pius XII (1939-1958), the pope that led the Catholic Church during WWII, the Holocaust, and the beginning of the Cold War. The Global Pontificate of Pius XII brings together historians who were among the first to consult the previously unseen Vatican materials. These long-awaited records allow for an expansion of the current historiography beyond the pope’s biography. Methodologically, the volume works to transcend the rigidity of religious history and engage with new approaches in global, transnational, and postcolonial history to re-introduce questions surrounding religion into modern post-war historiography.