Pope Leo XIV says violence is a last resort, rejects Trump’s claim about supporting nuclear weapons
Pope Leo XIV emphasized that violence should be a last resort and reaffirmed the Church's opposition to nuclear weapons. He dismissed U.S. President Donald Trump's claim that the pope supports Iran acquiring a nuclear weapon. The pope reiterated his commitment to preaching peace and the Gospel during a press briefing outside Castel Gandolfo. The statement came ahead of an upcoming meeting between the pope and U.S. Secretary of State Marco Rubio.
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Pope Leo XIV has reiterated that violence must be a last resort and that the Catholic Church opposes nuclear weapons, directly refuting President Donald Trump’s repeated claim that the pontiff supports Iran acquiring a nuclear bomb. The dispute has heightened tensions ahead of U.S. Secretary of State Marco Rubio’s scheduled meeting with the Holy Father. 1 2
President Trump told EWTN News Nightly that he wants Secretary Rubio to convey the message “Iran cannot have nuclear weapons,” insisting the pope “seemed to be saying” Iran could obtain one 1.
He has repeated this allegation on the Hugh Hewitt Show and on Truth Social, accusing the pope of endangering Catholics by allegedly endorsing a nuclear‑armed Iran 2.
In remarks to reporters at Castel Gandolfo on May 5, 2026, Leo XIV said the Church has spoken for years against all nuclear weapons and denied ever supporting Iran’s nuclear ambitions 2.
He cited his March 5 video message (“May the nuclear threat never again dictate the future of humanity”) and a June 2025 audience calling for a world free from nuclear threat 2.
Leo XIV described “just war” as a “very complex problem” that must be evaluated on many levels, emphasizing that the nuclear age requires a re‑examination of war doctrine 2.
He reiterated the Church’s criteria for a just war—grave evil, proportionality, reasonable chance of success, exhausted alternatives, and legitimate authority—drawing on the Catechism 2.
The pope stressed that dialogue, not arms, should resolve conflicts, urging resources be directed to humanitarian needs rather than the arms industry 2.
Rubio’s visit, scheduled for May 7, 2026, follows heightened U.S.–Vatican tension after Trump’s attacks on the pope for “being weak on crime” and “terrible for foreign policy” 2.
U.S. Ambassador to the Holy See Brian Burch described the meeting as an opportunity for “fraternity and authentic dialogue” on Middle‑East policy and shared goals 2.
Rubio stated the trip is routine, focusing on religious freedom, Christian persecution, and aid to Cuba, not on Trump’s criticism 1.
Despite Trump’s public disparagement, the Vatican maintains that disagreements are normal between nations and can be addressed through dialogue, as reflected in Burch’s comments 2.
The pope’s broader peace appeals—including his Easter urbi et orbi message and calls for an end to the Israel‑Iran conflict—underscore a consistent Vatican stance against war and nuclear proliferation 2.
Pope Leo XIV’s stance on nuclear disarmament and violence
Pope Leo XIV’s publicly available teaching in the sources you provided points clearly toward peace through “unarmed and disarming” attitudes and policies, a moral critique of violence and the arms race, and a reiteration of the Church’s wider doctrine that war does not make everything morally licit—including grave condemnation of indiscriminate destruction. However, in the specific Pope Leo XIV documents you supplied here, I do not see a direct, technical statement focused solely on nuclear disarmament; instead, his stance appears expressed through broad disarmament-and-nonviolence themes that the Church’s moral teaching directly applies to weapons of mass destruction.
In his World Day of Peace 2026 message, Pope Leo XIV frames peace as moving toward an “unarmed and disarming” peace and connects it to an interior and communal “disarmament of heart, mind and life.”
He also grounds this orientation in biblical imagery of nations abandoning war-making instruments—“beat their swords into plowshares, and their spears into pruning hooks.”
In a separate peace-vigil context (Holy Rosary for Peace), he explicitly describes prayer not as avoidance of responsibility but as a transformative response to the horror and injustice of war and violence—“Prayer is not a refuge in which to hide from our responsibilities… Rather, it is… transformative response to death,” urging people to “rise from the rubble.”
And in his letter connected to Saint Francis of Assisi’s centenary theme, he calls for “peacemakers: unarmed and disarming witnesses of the peace that comes from Christ.”
Bottom line from these texts: Pope Leo XIV’s stance (in what you provided) is not “disarmament-only” in a technical sense; it is a moral and spiritual program: dismantle the roots of violence, promote peace concretely, and understand peacemaking as “unarmed and disarming” witness.
Pope Leo XIV’s disarmament emphasis aligns with the Church’s longstanding moral framework for war and the ethics of weapons.
The Catechism states that every act of war directed to the indiscriminate destruction of whole cities or vast areas with their inhabitants is a crime demanding “firm and unequivocal condemnation.”
It adds that modern warfare gives the opportunity—especially through atomic, biological, or chemical weapons—to commit such crimes.
Relevance to nuclear issues: even if Pope Leo XIV doesn’t name “nuclear disarmament” in the excerpts you supplied, the Church’s moral principles explicitly flag atomic weapons as uniquely dangerous in relation to indiscriminate destruction and mass harm.
The Catechism describes “the accumulation of arms” as paradoxically viewed as deterrence, while noting “strong moral reservations,” because “the arms race does not ensure peace” and can aggravate causes of conflict; it also says that over-armament increases the danger of escalation.
Relevance to disarmament: Pope Leo XIV’s “disarming” peace theme is morally consistent with the Church’s critique that armament accumulation undermines peace and increases risk.
The Catechism insists: “The mere fact that war has regrettably broken out does not mean that everything becomes licit between the warring parties.”
It also states that the Church and human reason assert the permanent validity of the moral law during armed conflicts, and that practices deliberately contrary to the law of nations are crimes.
The Catechism lays out strict conditions for legitimate defense by military force (lasting, grave, and certain harm; impractical or ineffective alternatives; serious prospects of success; and that the use of arms must not produce evils graver than the evil eliminated).
This matters because certain “weapons of mass destruction” make meeting these moral constraints far more difficult—especially the requirement that one not cause worse evils than the ones being addressed.
The Catechism also presents a nuanced Catholic view of violence:
It teaches that those who renounce violence and bloodshed—while using means of defense available to the weakest—bear witness to evangelical charity, provided they do not harm others’ rights and obligations.
This theological emphasis dovetails with Pope Leo XIV’s repeated “unarmed and disarming” language.
At the same time, the Catechism affirms that governments and citizens are obliged to work for the avoidance of war, but that if the danger of war persists and there is no adequate international authority, governments cannot be denied the right of lawful self-defense once peace efforts have failed.
So Pope Leo XIV’s “disarming” stance should be read within this Catholic framework: peace is the goal, avoidance of war is an obligation, but lawful defense is not excluded in principle—while still bounded by strict moral conditions and the permanent validity of the moral law.
The Catechism adds that noncombatants, wounded soldiers, and prisoners must be treated humanely, and that blind obedience does not excuse participation in crimes; genocide orders are morally resistible.
This reinforces that “violence” is not only a political question but a moral one rooted in respect for persons even in conflict.
From the material you provided, the safest, strictly sourced conclusions are:
What I cannot do with confidence, given your excerpts, is cite a direct Pope Leo XIV policy statement that says “nuclear disarmament” in those exact terms, or specify a particular disarmament treaty position. The sources you supplied support a general disarmament-and-nonviolence posture, and Catholic moral principles in the same materials apply strongly to nuclear weapons because of their catastrophic, indiscriminate character and escalation dynamics.
Pope Leo XIV’s stance on violence (as shown in your provided texts) is to pursue peace as unarmed and disarming peacemaking, rooted in interior conversion and responsibility rather than escapism, and it coheres with Catholic moral teaching that condemns indiscriminate destruction, warns against the moral failures of the arms race, and insists on the permanent validity of moral law in war—principles that directly illuminate the moral case against nuclear weapons’ catastrophic risks.