The first American pope observed his first Holy Week while the Middle East burned. In the final week of March 2026, Pope Leo XIV presided over the holiest week in the Catholic calendar from Vatican City. At the Palm Sunday Mass before tens of thousands of people in St. Peter’s Square, he made two statements that resonated far beyond the religious context. He rejected the claim that God justifies war, and he offered particular prayers for Christians in the Middle East. CNN reports that Leo XIV — born Robert Francis Prevost in Chicago, raised in the neighboring town of Dolton, Illinois — was elected on May 8, 2025, as the 267th pontiff of the Catholic Church. He is the first pope born in the United States, the first from the Order of Saint Augustine, and only the second pope from the Americas after his immediate predecessor, Francis. His first Holy Week, under the shadow of a war in which his own birth country is a primary combatant, carries unusual weight.
Prevost was “the least American of the Americans.” His election shattered a long-standing assumption in Catholic diplomatic circles. The late Cardinal Francis George of Chicago, one of the most politically sophisticated American church leaders of his generation, famously argued that an American pope was essentially impossible as long as the United States remained the world’s dominant power. An American at the head of the Church would compromise the Vatican’s ability to act as a neutral moral interlocutor in global conflicts. The assumption was reasonable. Yet Prevost overcame it precisely because he was not perceived as a conventional American. He became a friar in the Augustinian Order in 1977, was ordained in 1982, and spent the better part of the following two decades in Peru, working as a parish pastor, seminary teacher, and diocesan administrator. Latin American cardinals, who make up a substantial portion of the College of Cardinals, reportedly described him as “a gringo who is one of us.” He bridged the Global North and the Global South in a way no other American candidate could.
The name Leo carries historical weight. A pope’s choice of name is not mere tradition — it is a statement of intent. Pope Leo XIII (r. 1878-1903) authored the encyclical Rerum Novarum in 1891, establishing the foundations of Catholic social teaching on workers’ rights, property, and the responsibility of the state to protect the vulnerable. His papacy coincided with the height of industrial capitalism and colonialism, and he spoke into that context with moral clarity. Leo I — “the Great” — in the fifth century is credited with persuading Attila the Hun to spare Rome from sack. The common thread across the historical Leos is engagement with the temporal world’s most destructive forces: economic exploitation, war, political violence. By choosing this name, Prevost signaled a papacy oriented toward confronting the material conditions of suffering in the world rather than retreating from them. His Palm Sunday address — explicitly rejecting the theological justification of war — was entirely consistent with that self-understanding.
An American at the head of the Church in a war led by America. The political dimension of Leo XIV’s particular situation cannot be separated from the religious one. The United States, along with Israel, attacked Iran on February 28, 2026. Tens of thousands of people have died. The Strait of Hormuz — a chokepoint critical to global energy supply — has been effectively closed. Refugees are fleeing conflict zones. And the first American pope is in Rome, presiding over the world’s largest Christian denomination, praying for the victims, and explicitly rejecting the theological arguments sometimes used to justify military action. Some American evangelical Christians hold a theology in which US support for Israel is connected to end-times prophecy — a framework that can be used to sanctify military conflict in the region. Leo XIV’s Palm Sunday statement reads as a direct challenge to that framework. That a native of Chicago is saying it gives the challenge a particular resonance.
The Christians of the Middle East who Leo prayed for are in genuine peril. The “Christians in the Middle East” for whom Leo offered special prayers are not an abstraction. Ancient Christian communities have existed in Iraq, Syria, Lebanon, and Iran for nearly two millennia — in some cases tracing their lineage to the earliest centuries of the Christian faith. Iraq’s Assyrian Christian community, estimated at 1.4 million before 2003, had been reduced to perhaps 150,000 by repeated waves of sectarian violence and displacement following the US invasion. Syria’s eastern Christian communities suffered catastrophically during the civil war. Lebanon’s Maronite Christians — historically among the most politically organized Christian communities in the Arab world — are directly in the line of fire between Israel and Hezbollah. Iran’s Armenian Christian minority and other smaller communities face uncertain safety as the country is subjected to sustained military strikes. These communities are caught between combatants who do not define their interests in terms of protecting ancient minorities. Leo’s prayers reflect a genuine pastoral responsibility to people whose churches and livelihoods are under direct threat.
The Vatican has historically served as a back-channel mediator. The Holy See — the Vatican as a diplomatic entity — maintains something analogous to embassies in nearly every country in the world through its network of apostolic nuncios. It has historically used this network to mediate in conflicts where state-to-state diplomacy has failed. During the Cold War, the Vatican maintained simultaneous relationships with both Eastern and Western blocs while supporting the Solidarity movement in Poland. In Latin America, it attempted to document human rights abuses under military regimes in the 1970s and 1980s. Most recently, it was revealed that the Vatican played a quiet but significant mediating role in the 2014-2015 US-Cuba normalization negotiations under Francis. Whether the Vatican can play a comparable role in the current Iran conflict is uncertain, but not implausible. Iran has a small Catholic minority, and the Vatican has maintained non-official contacts with Tehran. An American pope mediating in a conflict involving the United States carries obvious complications — but those same complications might make him a more credible intermediary in the eyes of parties who have exhausted other channels.
Catholic social teaching and the war: what it prescribes. The Catholic Church’s teaching on war — developed over centuries through the “just war” tradition — holds that military force can only be morally justified under strict conditions: just cause, right intention, proper authority, last resort, probability of success, and proportionality of means. The United States and Israel attacked Iran preemptively, targeting military infrastructure and reportedly killing Khamenei. Catholic moral theologians have been divided on whether the attack met just war criteria, with many arguing that the preemptive nature of the strikes and the scale of civilian casualties render it unjustifiable under traditional doctrine. Leo XIV’s Palm Sunday statement did not explicitly invoke just war theory, but his rejection of the claim that God justifies war aligns with the skepticism toward easy theological legitimation of military force that has characterized progressive Catholic thought since Vatican II. This matters for policy as well as theology: the moral framing of a conflict shapes public opinion in many countries, including the United States, where a significant portion of the population is Catholic.
The parallels to Francis’s papacy are instructive. Jorge Mario Bergoglio — Pope Francis — was elected in 2013 as the first Latin American pope, and his papacy was defined by a consistent prioritization of the marginalized: the poor, refugees, those excluded from economic and political power. He was not afraid to criticize the economic system that produced inequality, or the political systems that perpetuated it. He visited Lesbos to stand with refugees. He met with political leaders across ideological spectrums. He was, by any measure, a pope engaged with the world’s suffering rather than retreating from it. Prevost, who worked alongside this tradition as a Peruvian missionary for decades, inherits it. The specific context — Middle Eastern war, energy crisis, the threat to ancient Christian communities — is different from the refugee crisis and inequality debates of Francis’s years. But the pastoral and moral instinct appears similar: be present to suffering, speak clearly about injustice, do not sanctify power.
The legacy being built has barely started. Leo XIV’s papacy began less than a year ago, and the first Holy Week is, in a sense, his first real moment of worldwide pastoral visibility. The choices he makes in the coming months — about how explicitly to engage with the Iran war and its humanitarian consequences, about whether to pursue back-channel mediation, about how to speak to the Catholic communities in the United States who support the war and the Catholic communities in Lebanon and Iraq who are suffering from it — will begin to define what his papacy stands for. The historical Leos were defined by their engagement with the great conflicts of their eras. Whether Leo XIV will be remembered as a moral voice of the early twenty-first century’s most dangerous period, or as a figure who spoke carefully but did not decisively engage, will depend on choices he is only beginning to make. His first Holy Week, marked by explicit rejection of war’s theological justification and prayer for war’s victims, suggests he is at least choosing to be present to the conflict rather than above it. In the current moment, that is not nothing.
The first American pope in an era of American wars. There is a specific tension in Pope Leo XIV’s position that deserves acknowledgment. He was born and raised in the United States, a country that is currently the primary military aggressor in the ongoing conflict in the Middle East. He leads a global church whose members in Lebanon, Iraq, Syria, and elsewhere are suffering the consequences of American military action. He speaks as the spiritual leader of hundreds of millions of American Catholics, many of whom voted for the president who ordered the strikes on Iran and who express support for those strikes. Navigating this triangulation — maintaining credibility with suffering communities in the war zone, maintaining pastoral relationship with American Catholics who support the war, and maintaining the Vatican’s role as a potential neutral mediator — is perhaps the most politically delicate challenge of his early papacy. His Palm Sunday address was a carefully calibrated beginning: a clear moral statement against war’s theological justification, without a direct accusation against any named party, paired with pastoral prayer for the war’s victims. It threads the needle without fully resolving the tension. That tension will only intensify as the conflict develops.
What history suggests about popes and wars. The Catholic Church’s record on armed conflict is long, complicated, and far from uniformly positive. The Crusades were launched under papal authority. The Thirty Years’ War involved religious dimensions that implication the Church in one of Europe’s most devastating conflicts. In the twentieth century, Pope Pius XII’s silence on the Holocaust is the most painful historical episode for the Church’s moral credibility on conflict. But there have also been moments of genuine moral courage: Pope John XXIII’s personal diplomacy during the Cuban Missile Crisis, in which he used back channels to both Kennedy and Khrushchev to urge restraint; Pope John Paul II’s role in supporting Polish Solidarity without escalating cold war tensions; Pope Francis’s consistent advocacy for refugees and his willingness to name economic systems that produce suffering. Leo XIV is heir to both the failures and the achievements of this history. He knows it; it shapes how he speaks and what he chooses to do. The question for observers is not whether the Church has always been on the right side — it clearly has not — but whether this pope, at this moment, with this particular conflict, will be on the right side of history as events unfold.
Easter 2026 as a symbolic marker. Easter Sunday in 2026 falls in the middle of a live war, with casualties mounting and a deadline for further escalation looming. The Easter message — resurrection from death, hope beyond apparently final defeat — will take on particular resonance this year for the millions of Christians worldwide who are watching the conflict and its human consequences. For Leo XIV, the Easter homily is an opportunity to speak to the largest global audience his papacy is likely to have in its early period. What he says — how explicitly he engages with the specific conflict, what he demands of the parties, what he offers in terms of Vatican engagement — will be closely watched. Early indications from Palm Sunday suggest he is not afraid to speak clearly about war’s unjustifiability. Easter may be the moment when he moves from moral statement to concrete call for action.
The first months of a papacy often define its entire character. Historians of the papacy note that the early decisions and statements of a new pope frequently establish the themes and priorities that will define the entire reign. Francis’s early gestures — washing the feet of prisoners, living in the guesthouse rather than the papal apartments, speaking about the “smell of sheep” that a pastor should have — signaled a papacy of pastoral simplicity and preferential option for the marginalized that he maintained for more than a decade. Leo XIV’s Palm Sunday statement, coming less than a year into his papacy, suggests that engagement with political violence and its victims will be a defining theme of his as well. The historical Leos were popes who engaged with the great destructive forces of their eras. The Leo who rejected Attila at the gates of Rome did not merely pray from behind the city walls — he went out to meet the threat. Whether Leo XIV will find an equivalent moment of direct engagement with the current crisis, rather than speaking about it from a moral altitude, may be the defining test of whether his papacy lives up to the name he chose.
What Japanese Catholics might take from this moment. Japan’s Catholic community is small in numerical terms — fewer than half a million faithful in a country of 125 million — but it is disproportionately present in education and social welfare, and it includes many thoughtful people who engage seriously with questions of justice, peace, and international affairs. For them, the emergence of an American-born pope who has spent his life in mission and who speaks clearly against war represents a particular challenge and opportunity. The challenge is to not simply celebrate the papal statement and return to ordinary life, but to find ways that Japan’s Catholic institutions — schools, hospitals, development organizations — can actively contribute to the humanitarian response to the current crisis. The opportunity is that a pope who understands both the American political context and the experience of the Global South may be a particularly effective interlocutor for Japanese Catholics trying to navigate the tensions between their country’s security dependence on America and their moral commitment to peace. The intersection of faith and international relations is rarely simple, but it is rarely irrelevant either.
The geopolitical significance of American Catholicism in this moment. Pope Leo XIV leads approximately 70 million American Catholics — a politically diverse constituency that includes strong Trump supporters, Biden-era liberals, and everything in between. American Catholic opinion on the Iran war is itself divided, with some supporting the military strikes as necessary to prevent Iranian nuclear capability and others viewing them as morally unjustifiable preemptive aggression. Leo XIV’s Palm Sunday statement did not resolve this internal American Catholic debate — it cannot, and probably should not. But it did something important: it inserted a clear moral reference point into a debate that has been dominated by security arguments. “God does not justify this war” is a statement that American Catholics must now reckon with in forming their own views, even if they do not ultimately agree with it. For a church that has sometimes been accused of excessive accommodation to American political power, this is a meaningful act of prophetic independence.
The challenge of speaking to both perpetrators and victims. One of the most difficult pastoral challenges Leo XIV faces is that his church includes both the American soldiers and policymakers responsible for the strikes on Iran and the Christian communities in Lebanon, Iraq, and Iran who are suffering their consequences. A parish priest can choose to speak to one congregation or the other. A pope speaks to all of them simultaneously, and anything he says will be heard differently by people in radically different positions relative to the conflict. The choice of language — rejecting “claims that God justifies war” rather than condemning the United States by name — reflects this pastoral reality. It allows American Catholics who supported the strikes to hear a general moral statement about war, while allowing Middle Eastern Christians to hear a specific condemnation of the violence that has uprooted their communities. Whether this kind of moral ambiguity serves justice or obscures it is a question Leo XIV will be living with throughout his papacy.
The potential for a Vatican-mediated backchannel. The most concrete way Leo XIV might affect the conflict’s trajectory is not through public statements but through the Vatican’s quiet diplomatic infrastructure. The Holy See maintains formal diplomatic relations with Iran, despite the Islamic Republic’s official hostility to Christianity. It has relationships with Lebanese and Iraqi Christian communities that give it ground-level intelligence about the humanitarian situation. And as an institution that neither Israel nor the United States can easily dismiss as biased against them — the Vatican’s complicated relationship with both countries notwithstanding — it has access that purely secular intermediaries may lack. Whether the current Vatican diplomatic team is using these assets actively is not publicly known. But the combination of Leo XIV’s personal commitment to peace and the Vatican’s structural diplomatic resources creates a real possibility for back-channel engagement that could matter.
The conversation Leo XIV started matters beyond his papacy. A pope who speaks plainly against war, from a position of moral authority that transcends national loyalties, serves a function that secular institutions cannot replicate. Whether he is heard is another question. But the words are now in the world, and the world is better for them.
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