With President Trump facing high-stakes decisions about Iran and preparing for a summit with China, why would he dispatch his national security adviser and secretary of State, Marco Rubio, to the Vatican for a meeting with Pope Leo XIV? It’d be easy to see it all in the context of short-term politics and the Iran conflict, which the pope has been critical of the U.S. for. But there’s a higher-level dynamic, too. If Rubio and the pope can get the relationship right, it has the potential to be