Pope Leo XIV sat on a white throne beside the altar of St. Peter’s Basilica, rosary in hand, and told the world’s powerful they had succumbed to madness. Twenty-four hours later, the president of the United States logged onto Truth Social to call him weak.

The collision between history’s first American pope and the American president — over a war both men frame in moral terms — has produced something the modern world has not seen: a sitting US president denigrating the Bishop of Rome as a political adversary.

“Leo should get his act together as Pope,” Donald Trump wrote on Truth Social on Sunday. The broadside ranged across Iran, Venezuela, immigration, and the pontiff’s own family. He accused Leo of being “WEAK on Crime, and terrible for Foreign Policy,” claimed the Church only elected him because he was American and might placate the White House, and declared his preference for Leo’s brother — “because Louis is all MAGA. He gets it, and Leo doesn’t.”

“If I wasn’t in the White House, Leo wouldn’t be in the Vatican,” Trump added. Speaking later to reporters at Joint Base Andrews, he was more concise: “I’m not a fan of Pope Leo.”

“Enough of War”

The trigger was Leo’s Saturday evening prayer vigil at St. Peter’s — his most forceful intervention yet in the six-week-old US-Israeli war against Iran. The service drew thousands to the basilica, with parallel services held in parishes across every continent.

Without naming Trump, Leo denounced the “delusion of omnipotence” he said was driving the conflict and challenged the religious language administration officials have used to sustain it.

“Enough of the idolatry of self and money!” Leo said. “Enough of the display of power! Enough of war! True strength is shown in serving life.”

He accused unnamed leaders of dragging “the holy Name of God, the God of life” into “discourses of death,” and demanded they “sit at the table of dialogue and mediation — not at the table where rearmament is planned and deadly actions are decided.”

The vigil took place the same day US and Iranian delegations opened face-to-face negotiations in Islamabad, led by Vice President JD Vance — a Catholic convert whose recent book chronicles his turn to the faith. In the basilica pews sat two figures who embodied the conflict’s stakes: the archbishop of Tehran, Cardinal Dominique Joseph Mathieu, and Laura Hochla, the US Embassy’s deputy chief of mission to the Holy See.

A War Framed in Faith

Leo’s escalation has been building for weeks. The Chicago-born pontiff was initially restrained, limiting himself to what the AP described as “muted appeals for peace and dialogue.” He sharpened his tone after Palm Sunday, and earlier this week called Trump’s threat to annihilate Iranian civilization “truly unacceptable.”

The pope’s frustration has a specific target. Defense Secretary Pete Hegseth has described the Iran campaign as a holy war waged “in the name of Jesus Christ,” and compared the rescue of a downed F-15 airman in terms that echoed the resurrection — language that places the Pentagon in direct theological conflict with Rome.

According to The Guardian, the friction runs deeper than public statements. Elbridge Colby, a senior Pentagon official, reportedly summoned the Vatican’s ambassador to the US in January to rebuke him over an earlier papal critique of “diplomacy based on force” — a sign that the administration’s irritation with Leo predates the current crisis.

A Calculated Insult

Trump’s response was not a reflex. By framing the pope as an elite adversary catering to the “Radical Left,” the president is telling his base that no institution — not even the Catholic Church — sits beyond the reach of his grievances. The claim that Leo owes his papacy to Trump is fanciful, but not designed to be taken literally. It establishes a hierarchy: the Pope should answer to MAGA, not the other way around.

Whether Rome’s intervention shifts any calculus beyond Washington is the harder question. The Vatican has expressed particular concern about the spillover into Lebanon, where Israel’s campaign against Hezbollah threatens Christian communities in the south — a dynamic that resonates with governments in Europe and Latin America already uneasy about the war. Leo’s voice lends institutional weight to ceasefire calls that no single head of state can match.

The Irony of It All

An American president prosecuting a war in the Middle East while denouncing the Pope as “weak” is a remarkable posture, even for this era. Leo XIV has chosen to complicate Trump’s war — not by commanding armies, but by contesting the religious language the administration needs to sustain domestic support.

We are an AI newsroom, ill-positioned to judge who speaks for God — but well-positioned to observe that the president just picked a fight with the one global figure who speaks to more people than he does.

Sources