The insult is baked into every frame of this spectacle. Donald Trump’s Washington is now standing at podiums and telling Pope Leo XIV, a man who entered seminary at fourteen, spent eighteen years in theological formation, and served twelve years as the worldwide head of the Order of Saint Augustine, that he does not understand Catholic teaching on war.

Not just any pope. An Augustinian one. Fresh from walking the ruins of Augustine’s cathedral in Hippo, Algeria, where he laid a wreath at the site where the Doctor of Grace preached sixteen centuries ago.

And Mike Johnson, a Southern Baptist with a business degree from LSU and a law degree he used to run a law school that never enrolled a single student, is the man explaining it all. He stood at a House Republican press conference this week and informed the Holy Father that there exists “something called the just war doctrine” – as though he had discovered it five minutes ago on a podcast and could not quite believe the Pope had missed the memo.

This is not a serious theological disagreement. This is a political movement trying to weaponise Catholic language for war while publicly lecturing a pope who has spent his life inside the tradition they barely understand.

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The lesson from the podium

The exchange began when Pope Leo XIV made remarks that, in any sane world, would be uncontroversial for the Bishop of Rome. “God does not bless any conflict,” he said, condemning the use of religion to justify war. He added that Jesus “does not listen to the prayers of those who wage war, but rejects them.”

The Trump administration, reportedly preparing for military action against Iran, needed religious cover. And quickly. Enter Speaker Mike Johnson. “It is a very well-settled matter of Christian theology,” he told reporters on Wednesday. “It’s something called the ‘just war doctrine.'” The implication was clear: the Pope had forgotten his own church’s teachings. A Southern Baptist evangelical was here to correct him.

Vice President JD Vance, a Catholic convert who reportedly chose Augustine as his confirmation patron saint, went further. At a Turning Point USA event, Vance said Pope Leo should be “careful when he talks about matters of theology” – suggesting the Vatican stick to moral issues and leave the political commentary to, presumably, the vice president.

An Augustinian Pope does not need MAGA theology lessons

Let us pause to appreciate the geometry of this. A convert, barely settled into his new faith, is telling a man who has prayed the Divine Office as an Augustinian friar for decades that he needs to watch his step around theological matters. The same convert who invoked the “long tradition of just war theory” as though Augustine himself would have nodded along to a pre-emptive strike on Tehran.

The U.S. bishops’ doctrine chairman, Bishop James Massa, had to issue a clarification. Just war, he reminded everyone, is narrow and conditional: defence against active aggression, only after every effort at peace has been exhausted. It is not a blank cheque. It was never a blank cheque. Augustine wrote City of God amid the collapse of the Roman Empire, and he never treated war as a permission slip. War, for the Bishop of Hippo, could only be an act of grief, undertaken to protect the innocent, and never without tears.

Meanwhile, Pope Leo was literally walking through the archaeological ruins of Augustine’s cathedral in Annaba, Algeria (ancient Hippo). He celebrated Mass at the Basilica of St. Augustine. He planted an olive tree as a symbol of peace. A choir sang hymns in Latin, Berber, and Arabic drawn from Augustine’s own texts.

The image is almost too perfect: the Pope honouring the inventor of just war doctrine on his home ground, while 10,000 miles away, a Speaker with no theological training explains to reporters that there is “something called” that very doctrine.

What MAGA is really trying to do

Let us be honest about what is happening here. Mike Johnson and JD Vance are not really having a good-faith theological dispute with Pope Leo XIV. They are not defending the just war tradition as Augustine conceived it, narrow, reluctant, grief-stricken, and surrounded by every possible barrier to entry. They are shopping for doctrine that will bless what they already want.

The administration wants religious cover for a war posture. Iran is the target. And so the most politically useful Christians in Trumpworld are trying to flatten sixteen hundred years of Catholic teaching into a Fox News bumper sticker: sometimes war is just, so stop asking questions.

Johnson is doing what he always does. He wraps Republican policy in Christian language, whether it is border enforcement (his 1,700-word exegesis on Romans 13 arguing that mercy toward migrants is an individual obligation but never a governmental one) or war. He picks theological fights with a man who has spent his entire adult life inside the tradition Johnson claims to understand, and he does it from a podium, with no apparent awareness of how absurd the scene looks to anyone who has actually read Augustine.

Vance is doing the same thing, only with a convert’s confidence and a pundit’s instinct for selective quotation. Converts are often the most zealous, and the most prone to believing that their newfound framework exists to confirm their existing politics. Vance’s suggestion that the Pope should be “careful” is not a defence of orthodoxy. It is an attempt to silence a moral voice that has become inconvenient.

Trumpworld likes Popes fine until a Pope says no

The pattern is unmistakable. Trump praised Pope Francis when it cost nothing, tweeting in 2013 that the new pope was “a humble man, very much like me“, then attacked Francis as “disgraceful” when the pontiff suggested that building walls rather than bridges was not Christian. Trump welcomed Pope Leo as the first American pope in May 2025, calling it “a great honour.” Then, in April 2026, he turned on Leo with a Truth Social screed: “Pope Leo is WEAK on Crime, and terrible for Foreign Policy… I like his brother Louis much better than I like him, because Louis is all MAGA.“

That is the tell. Trump does not dislike Leo because the Pope misunderstands just war theory. He dislikes Leo because the Pope will not bless what Trump wants.

And Johnson and Vance are not objecting to politics in the church. They are objecting to the church when it obstructs their politics. The “stay in your lane” line – expressed by Rep. Carlos Giménez, who said he was “for the pope for spiritual things and for the president for political things” – only appears when the Pope’s moral language collides with the administration’s appetite for force. When the Vatican agrees with them, they will quote it approvingly. When it does not, they will explain that the Pope should stick to saying Mass.

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The men lecturing Pope Leo are nowhere near his depth

Rep. Troy Nehls of Texas told reporters the pope should “keep his nose in the church’s business and stay out of the political arena.” This from a man who was fired from a Texas police department for nineteen violations in a single year and later stripped of a Combat Infantryman Badge, the Army confirmed he was never eligible to wear. But sure, let us take theological instruction from him.

The Pope, inconveniently for all of them, actually knows the tradition. At fourteen, he entered seminary. A doctorate from the Pontifical University of St. Thomas Aquinas in Rome followed. For twelve years, he served as Prior General of the Augustinians – the worldwide head of the order Augustine himself founded. He has prayed at Augustine’s tomb and studied The City of God in Latin. This is a man who understands, in a way that no amount of cable news hit appearances can replicate, that just war is not a loophole. It is a burden.

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