President Trump said Tuesday that the United States is planning to strike a fortified underground site near one of Iran’s main uranium-enrichment facilities. That same night, Iranian state media reported a U.S. strike on an electrical installation close to the nuclear power plant at Bushehr. Taken together, these two facts present the most serious moral question this war has raised so far. The question is not whether the United States may defend itself; the Church has always recognized that right. The question is what a nation may do in the name of that defense. There is a kind of harm that cannot be aimed, and the Church has been warning against it since long before the first reactor was built.
The News Story
The war between the United States and Iran escalated sharply over the past 24 hours, with U.S. forces carrying out their eleventh consecutive night of airstrikes on Iran while Iran struck back at American military targets across the Gulf and in Jordan. The renewed fighting followed the collapse of a 60-day ceasefire brokered in mid-June, and it pushed oil prices higher and drew a second critical waterway into the conflict.
U.S. Central Command said it targeted Iranian military operations centers, maritime capabilities, aircraft hangars, drone storage facilities, and military logistics infrastructure, describing the strikes as an effort to degrade Iran’s control over the Strait of Hormuz, through which roughly 20% of the world’s oil passes. Iranian state media reported explosions across seven provinces and said one strike hit an electrical installation near the Bushehr nuclear power plant. President Trump told reporters Tuesday the U.S. was planning to hit a fortified underground site near one of Iran’s main uranium-enrichment facilities; Iran warned that an attack on nuclear or “other sensitive facilities” would be a major escalation.
Iran said it again targeted a base in eastern Jordan where three U.S. personnel were killed last week, and struck the Sheikh Isa air base in Bahrain, a hub for the U.S. Navy’s Fifth Fleet. Jordan said it intercepted six Iranian missiles Wednesday. The Pentagon identified the third service member killed in Jordan as Sgt. Angel S. Rampersad, 28, of Ozone Park, N.Y., bringing U.S. war deaths to 18. Iran’s government says roughly 3,000 people in Iran, many of them civilians, have been killed since the war began.
A new front opened when Yemen’s Iran-backed Houthi rebels declared the Bab el-Mandeb strait, a Red Sea passage vital to Saudi Arabia’s oil exports, off limits to that country and warned international shipping to avoid it. The Houthi-run news agency said six ships changed course after the warning, and commercial trackers reported several tankers loaded with Saudi crude backing out of the waterway. Oil prices rose again, with benchmark crude topping $92 a barrel after Iran attacked a tanker in the Strait of Hormuz.
On Capitol Hill, Defense Secretary Pete Hegseth testified that the war has cost $37.5 billion so far, as the White House sought roughly $90 billion in additional funding, mostly for military operations. Diplomatic efforts continued in parallel, with Iranian Interior Minister Eskander Momeni visiting Pakistan, a mediator, for talks aimed at potentially reviving the collapsed ceasefire. Trump said Iran wants “to meet desperately” but that “until they’re ready to meet in a meaningful way, we have no interest.” [1][2][3][4][5][6][7]

A nuclear power plant against a clear sky. The story turns on a threatened strike near Iran’s Bushehr plant and its enrichment sites. Licensed via Adobe Stock, ID 334851608.
Catholic Social Teaching Analysis
The Church does not approach war as a pacifist, nor does she approach it as a hawk. She begins with the nation that has been attacked. Iran and the United States have been trading fire for months, and 18 American families have now buried a loved one. A government whose people are under attack has a true duty to protect them. The Catechism treats this duty with great care and sobriety. It lists the conditions under which military force may be used, and the final condition is the one that matters most in this moment: “the use of arms must not produce evils and disorders graver than the evil to be eliminated. The power of modern means of destruction weighs very heavily in evaluating this condition.” [8] It is worth pausing over that final sentence. The Church built a warning about modern weapons directly into the very rule that permits defense. She anticipated the reactor long before it was built.
The question, then, is not whether the United States may act. The question is what an act against a nuclear site actually does. Here the whole architecture of Catholic teaching on war converges on a single point.
The proportionality condition deserves careful attention, because it does real work in this situation. The Catechism does not say that force must merely produce more good than harm on some ledger. It says the arms used “must not produce evils and disorders graver than the evil to be eliminated,” and it then singles out modern weapons as the thing most likely to exceed that limit. [8] A commander weighing a strike on Bushehr or on a buried enrichment hall is weighing exactly this condition. The evil to be eliminated is a nuclear program that might, someday, produce a weapon. The evil that might be produced is a radiological release, today, over a real population living downwind. When the possible harm is so unbalanced in time and in certainty, near-term and physical on one side, future and hypothetical on the other, the proportionality condition is not a close call. It weighs heavily against the strike. The Church wrote that weight into the rule deliberately.
The Line The Church Drew Before The Bomb
The Compendium of the Social Doctrine of the Church is the Church’s own organized summary of everything she teaches about society, and on the subject of war it does not hedge. It quotes the hard judgment that “it is hardly possible to imagine that in an atomic era, war could be used as an instrument of justice.” [9] War, it says, is “the failure of all true humanism,” and “always a defeat for humanity.” [10] That is strong language from a document that still allows legitimate defense. The Church holds both truths at once. A nation may defend itself, and war remains a catastrophe that solves almost nothing and breeds new conflicts. Anyone who has watched a mid-June ceasefire collapse into an eleventh night of strikes can recognize the truth of that second claim.
The sharpest teaching, however, is older and more direct. The Catechism, quoting the Second Vatican Council, states it plainly: “Every act of war directed to the indiscriminate destruction of whole cities or vast areas with their inhabitants is a crime against God and man, which merits firm and unequivocal condemnation.” [11] It then adds a warning that could have been written for this very week: “A danger of modern warfare is that it provides the opportunity to those who possess modern scientific weapons, especially atomic, biological, or chemical weapons, to commit such crimes.” [11]
It is important to notice precisely what the Church condemns. She does not condemn the size of the bomb. The key word is “indiscriminate.” She condemns force that cannot distinguish a soldier from a schoolgirl, force whose harm spreads beyond the target and falls upon whoever happens to be downwind. This is the whole moral problem with striking a nuclear facility. A missile may be aimed with great precision. What comes after it cannot be aimed at all. A damaged reactor or a strike on an enrichment site does not release its harm along the flight path of the weapon. It releases it on the wind, into the water table, and into the lungs of farmers and children who were never combatants and never will be. This is the harm you cannot aim. The Church condemned it by name generations before the first centrifuge spun in Natanz.
Weapons Of Mass Destruction, And The Facilities That Become Them
The Compendium goes further and names the category directly. “Arms of mass destruction, whether biological, chemical or nuclear, represent a particularly serious threat. Those who possess them have an enormous responsibility before God and all of humanity.” [12] This teaching is usually read as a rule about who may hold such weapons. But it also says something about who may release their contents upon the world. A nuclear reactor or an enrichment plant contains exactly the material the Church calls a particularly serious threat. To bomb such a facility is not to destroy a weapon of mass destruction. It is to detonate one by proxy, using the enemy’s own facility as the delivery system and the local population as the target it was never supposed to have.
Fairness requires presenting the strongest version of the opposing argument, because a serious Catholic owes that much to those with whom he disagrees. The case for striking the enrichment site runs as follows. Iran is at war with the United States. A nuclear-armed Iran would threaten millions. It is better to strike the program now, at some risk, than to allow it to finish and face a far graver risk later. This is not a frivolous argument. It takes seriously, the duty to protect the innocent, a duty the Church also takes seriously. The Compendium insists that the right to use force “is associated with the duty to protect and help innocent victims who are not able to defend themselves from acts of aggression.” [13]
Yet the argument still fails on the Church’s own terms. The duty to protect the innocent cannot be discharged by a means that predictably kills a different set of innocents. The Compendium, in the very next breath, warns that “far too often, the civilian population is hit and at times even becomes a target of war,” and it calls this always unacceptable. [13] It then states the principle without any exception: there is an “obligation to protect civil populations from the effects of war,” and that minimum protection of human dignity is “all too often violated in the name of military or political demands which should never prevail over the value of the human person.” [14] Military demands “should never prevail.” Not rarely, not usually. Never. The moment one says the strategic prize is worth the radiological harm to civilians, one has allowed a military demand to prevail over persons, and the Church has already shown where that reasoning ends.
Everything Does Not Become Licit
There is a temptation in a long and ugly war to conclude that the gloves have come off, that the other side started it, and that anything goes now. The Catechism closes that door firmly. “The mere fact that war has regrettably broken out does not mean that everything becomes licit between the warring parties.” [15] The moral law does not take a leave of absence when the shooting starts. And the Catechism names the protected class directly: “Non-combatants, wounded soldiers, and prisoners must be respected and treated humanely.” [16]
This is where the war’s own record should give everyone pause. Iran says roughly 3,000 people have died on its soil, many of them civilians. One piece of this conflict’s history deserves particular attention: the report that 168 students and teachers were killed at an elementary girls’ school in southern Iran in February, in a strike the U.S. military says it is still investigating. Whatever the investigation finds, the possibility alone is the reason the Church’s rule exists. Once one accepts that a sufficiently important target justifies indiscriminate harm, the schoolhouse and the reactor sit on the same slope, and the descent is swift. The non-combatant is not an obstacle to be regretted. She is a person whose dignity outranks the objective. Every objective.
Leo XIV And The End Of “Just War” As A Loophole
For centuries Catholics have reached for Just War theory, the framework refined by Saint Thomas Aquinas and others, to test whether a particular war can be waged rightly. Aquinas remains a treasure of the Church. But the Church’s teaching is a living thing, and where a more recent voice of the Magisterium develops the question, that newer voice governs. Pope Leo XIV, in his encyclical Magnifica Humanitas, has argued that the classical Just War Theory is outdated and must be treated as superseded in the Church’s moral analysis of war and peace. The Holy Father’s concern is precisely the one running through this entire analysis. The old theory was worked out for a world of swords and siege lines, where the harm of battle stayed roughly where it was placed. That world is gone. In an age of enrichment plants and warheads, the tidy checklist can become a permission slip, a way to bless as “proportionate” a strike whose real effects no general can contain.
The old Just War checklist, then, cannot settle this question. The Church’s current mind, read through Leo XIV and the whole modern corpus, is more demanding. It presses relentlessly toward the protection of the person and toward peace as the actual goal, not war as a tool of policy. When the Compendium says it is “hardly possible to imagine that in an atomic era, war could be used as an instrument of justice,” it is not being sentimental. [9] It is teaching that the means we now possess have outrun our ability to use them justly, and that a strike on a nuclear site stands at the outer edge of what the tradition can even attempt to justify.
The Road The Church Actually Points Down
None of this leaves us with a shrug. The Church is not merely against things. She points somewhere. The Compendium proposes, as a positive goal, “general, balanced and controlled disarmament,” governed by the principle of sufficiency, by which “each State may possess only the means necessary for its legitimate defense.” [17] The whole trajectory of the teaching runs away from escalation and toward the negotiating table. This is why the small item near the bottom of today’s news matters more than its placement suggests. An Iranian minister flew to Pakistan for talks aimed at reviving the collapsed ceasefire. That is the direction the Church has been pointing the entire time.
Set that against the President’s public posture. He says the Iranians “want to meet desperately” but that “until they’re ready to meet in a meaningful way, we have no interest.” Read as strategy, perhaps that is a bargaining posture. Read through the Catechism, it should trouble us, because the Church warns that the accumulation and use of ever-greater force “does not ensure peace” and instead “risks aggravating” the causes of war and “multiplies reasons for conflict.” [18] Eleven nights of strikes have not reopened the Strait of Hormuz. They have closed a second waterway, pushed crude past $92, and added Sgt. Rampersad’s name to a list that keeps growing. The teaching predicted exactly this. Force that aims at domination rather than at a just and stable peace tends to breed the next war inside the present one.
There is one more thread the Church would not let us drop, and it runs through the dullest line in today’s coverage. Secretary Hegseth told Congress the war has cost $37.5 billion, and the White House is asking for roughly $90 billion more. Numbers that large grow numb quickly. The Catechism refuses to let them. In the same passage that warns the arms race breeds war, it adds a sentence about who pays: “Spending enormous sums to produce ever new types of weapons impedes efforts to aid needy populations; it thwarts the development of peoples.” [19] Ninety billion dollars is not an abstraction. It is schools not built, clinics not staffed, and hungry people not fed, on both sides of this war and far beyond it. Every escalation writes a check the poor must cash. The Church keeps her eye on that ledger even when the cameras are pointed at the missiles. A strike on a nuclear site is expensive in a way no appropriations bill will ever capture, and the bill still comes due, first to the farmer downwind, then to the child whose clinic money went to the next round of ordnance.
The conclusion the Church leads us to is clear. A precise weapon aimed at an imprecise catastrophe is still an imprecise catastrophe. The plan to strike Iran’s nuclear and enrichment sites, whatever its strategic logic, runs directly against the oldest and clearest thing the Church teaches about war: one may not choose a means whose harm cannot be aimed. Defense is a duty. So is the refusal to become, in the name of defense, the very thing one claims to be stopping. The Church asks the harder and better question tonight. Not how to win this war, but how to stop it before someone opens a reactor to the sky and calls it justice.
Pray for the 18 American families. Pray for the 3,000 in Iran. And pray for the men in Pakistan trying to talk, because on the Church’s reading of this war, they are the only ones doing something that could truly be called defense.
Footnotes
- Jane Arraf, “U.S. and Iranian Attacks Continue as Tensions Mount on a Key Waterway in the Red Sea,” NPR, July 22, 2026, https://www.npr.org/2026/07/22/nx-s1–5902843/us-iran-updates.
- “Amid U.S.-Iran War, Houthis Declare a Blockade of Another Key Strait: Bab el-Mandeb,” NPR, July 21, 2026, https://www.npr.org/2026/07/21/nx-s1–5901846/us-iran-updates.
- “Pete Hegseth Testifies at Hearing on Iran Funding, Says War Cost $37.5 Billion,” CNN, July 21, 2026, https://www.cnn.com/2026/07/21/world/live-news/iran-war-trump.
- “Red Sea Blockade Threatens New Front in U.S.-Iran War,” The Washington Post, July 21, 2026, https://www.washingtonpost.com/world/2026/07/21/red-sea-blockade-threatens-new-front-us-iran-war/.
- “Hegseth Requests More Funding for Iran War and Zelenskyy Fires His Commander in Chief,” NBC News, July 22, 2026, https://www.nbcnews.com/news/us-news/hegseth-funding-iran-war-zelenskyy-fires-syrskyi-morning-rundown-rcna588656.
- “Oil Prices Jump as US and Iran Trade Attacks Over Strait of Hormuz,” Al Jazeera, July 13, 2026, https://www.aljazeera.com/economy/2026/7/13/oil-prices-jump-as-us-and-iran-trade-attacks-over-strait-of-hormuz.
- “2026 Iran War,” Encyclopaedia Britannica, accessed July 23, 2026, https://www.britannica.com/event/2026-Iran-war.
- Catechism of the Catholic Church, 2nd ed. (Vatican City: Libreria Editrice Vaticana, 1997), no. 2309.
- Pontifical Council for Justice and Peace, Compendium of the Social Doctrine of the Church (Vatican City: Libreria Editrice Vaticana, 2004), no. 497.
- Compendium of the Social Doctrine of the Church, no. 497.
- Catechism of the Catholic Church, no. 2314.
- Compendium of the Social Doctrine of the Church, no. 509.
- Compendium of the Social Doctrine of the Church, no. 504.
- Compendium of the Social Doctrine of the Church, no. 505.
- Catechism of the Catholic Church, no. 2312.
- Catechism of the Catholic Church, no. 2313.
- Compendium of the Social Doctrine of the Church, no. 508.
- Catechism of the Catholic Church, no. 2315.
- Catechism of the Catholic Church, no. 2315.




