In a move likely to further raise tensions with the administration of U.S. President Donald Trump, Pope Leo XIV will gather the world’s cardinals behind closed doors on Friday to hash out new guidelines on when war is justified. It’s a topic that has already fired a spat between the White House and the Vatican within the context of the Iran conflict. When Leo said the disciples of Christ were never on the side of those who “once wielded the sword and today drop bombs,” Vice President JD Vance retorted that the pontiff needed to be “careful” about his theology,...