On Saturday, President Donald Trump renewed his criticism of Pope Leo XIV after the pontiff met with Chicago Mayor Brandon Johnson at the Vatican, using the occasion to highlight his concerns about Iran's nuclear ambitions.

Trump-Pope Leo Feud Escalates Trump aimed both Pope Leo and Johnson in a post on Truth Social following the mayor's visit to Rome.

"Someone should explain to the Pope that the Mayor of Chicago is useless, and that Iran cannot have a Nuclear Weapon!" Trump wrote.

The president's remarks came after Johnson shared photos from his meeting with the pope, who was born in Chicago and became the first American to lead the Catholic Church.

Images from the visit showed Johnson presenting Pope Leo with a miniature Chicago flag and the two posing with a Chicago Cubs hat.