SYDNEY: When Pope Leo XIV condemned threats to destroy Iranian civilisation as “truly unacceptable” earlier this month, the backlash was immediate.
US President Donald Trump unleashed a tirade against the pope on social media, accusing him of being “weak on crime”, “terrible for foreign policy”, and acting like a politician rather than a religious leader.
But the exchange that followed matters more than the accusation. Confronted with criticism from Trump, Leo did not retreat. He made his position explicit: he was not afraid to speak, because his task was to proclaim the gospel.
Leo said he had “no fear of the Trump administration”, and “I don’t think that the message of the Gospel is meant to be abused in the way that some people are doing”. That response clarifies the logic of his pontificate. Leo XIV is not trying to enter politics. He is defining the limits within which politics can operate.
Pope Leo’s opposition to the Iran war is not political in origin. It is moral and theological. It rests on a consistent claim: power must be judged, violence must be restrained, and invoking God to justify destruction is a distortion of both religion and public life.
From the beginning of his pontificate, Leo XIV has made this clear. Elected on May 8,
2025, he used his first public address to call for dialogue, unity, and what he described as an “unarmed and disarming peace”. This was not positioning. It was a statement of purpose.
Since then, his interventions have followed a clear pattern. In 2025, as conflicts intensified in Ukraine, Gaza, and Sudan, he called repeatedly for ceasefires, humanitarian protection, and renewed diplomacy. The pattern continued into 2026. On March 8, as the Iran conflict escalated, he called for an end to bombing and urged that “weapons may fall silent” to allow dialogue. On April 11, at a prayer vigil in St Peter’s Basilica, he sharpened his language. He warned of a “delusion of omnipotence” driving war and declared: “Enough of war”. Leo is drawing a line between two forms of authority: one grounded in power, the other in moral responsibility. He does not claim to direct political outcomes. He claims the right, and the duty, to judge them.
Born in Chicago in 1955 and shaped by decades of pastoral work in Peru, he encountered the realities of violence, inequality, and political instability firsthand. Those experiences did not draw him into politics. They reinforced a conviction that power must be accountable to moral limits.
In a political culture that often treats moral claims as secondary, this is disruptive. His exchange with Trump brings that tension into focus. Trump’s criticism reflects a familiar expectation: that religious leaders should avoid direct engagement with political decisions. His response rejects that expectation. He does not present himself as a political actor. He presents himself as a moral voice that cannot be silent.
Political leaders operate within electoral cycles. Their decisions are shaped by immediate pressures. The papacy operates across generations. Its interventions are rarely decisive in the moment, but they shape how events are judged over time.
Leo XIV’s stance on the Iran war belongs to that longer horizon.
DARIUS VON GUTTNER SPORZYNSKI The writer is professor of History, Australian Catholic University The Conversation