Pope Leo used his first encyclical to attack AI and warfare, putting him in direct conflict with Trump and Silicon Valley.

• Leo compared the AI race to the Tower of Babel, calling it a monument to human pride that will end badly.
• He said no algorithm can make war moral, and AI makes conflict faster, more impersonal, and easier to start.
• The encyclical is seen as a veiled shot at Trump, who wants to speed up AI to beat China.
• Leo and Trump have already clashed over the Iran war, with JD Vance telling the Pope to stay in his lane.
• The Trump camp is now attacking the Pope and Catholics, a sharp turn from past Republican deference to the Vatican.

Outlook: Expect more public fights between the Vatican and the White House over war, AI, and Israel.