ABOARD THE PAPAL PLANE (RNS) – Pope Leo XIV said the war in Iran does not qualify as a just war according to Catholic teaching, while answering questions by journalists aboard the papal plane for his six-day visit to Spain. “I believe it has been already declared clearly,” Leo said answering a question by Italian journalist Franca Giansoldati, of Il Messaggero, on Saturday (June 6). “There is no just war there,” he said referencing the conflict in Iran. The question referred to Vice President JD Vance’s remarks in April, where he used just war theory to justify the war in Iran. On that occasion, Vance said the pope should “be careful” when talking about theology. “When the pope says that God is never on the side of people who wield the sword, there is more than 1,000-year tradition of just war theory,” he said. President Trump later said Leo was “weak” on war in a post on Truth Social. Leo pointed to his most recent encyclical, Magnifica Humanitas (Magnificent Humanity), which says that just war …