U.S. Vice President JD Vance praises Pope Leo XIV’s AI encyclical, highlighting moral challenges and calling to revisit just war doctrine.
Newsroom (27/05/2026 Gaudium Press ) U.S. Vice President JD Vance has offered measured but notable praise for Pope Leo XIV’s first encyclical, Magnifica Humanitas, describing its themes as “very profound” even as he acknowledged he has not yet read the document in full.
In an interview with NBC News published May 26, Vance said he has reviewed “bits and pieces” of the encyclical—formally titled Magnifica Humanitas: On Safeguarding the Human Person in the Time of Artificial Intelligence—as well as media coverage analyzing its contents. What he encountered, he said, aligned with expectations for papal teaching.
“What I read of it sounds very profound, and the sort of thing that you would expect and hope from a leader of the Church,” Vance said, emphasizing the enduring nature of moral principles even as their application evolves. “The thing about morality is that the principles never change, but the way you apply those principles does, because the world changes.”
A Papal Warning on Technology and Human Dignity
Pope Leo XIV’s encyclical centers on the ethical challenges posed by artificial intelligence and what he describes as a growing “culture of power.” The pontiff calls for renewed efforts to protect human dignity in an era of rapid technological transformation, urging a commitment to building a “civilization of love.”
The document reflects mounting global concern about AI’s social and moral implications, particularly as emerging technologies reshape human interaction, labor, and governance. Pope Leo’s intervention positions the Catholic Church within these debates, grounding its response in longstanding social teaching while addressing contemporary risks.
A central theme of the encyclical is the need for stricter ethical oversight in the deployment of AI, particularly in high-stakes areas such as warfare. The pope calls for “the most rigorous ethical constraints” and introduces the idea of new “concrete criteria for discernment” alongside “non-negotiable requirements” governing the use of such technologies.
Challenging the Boundaries of Just War Theory
One of the encyclical’s most consequential arguments is its critique of just war theory, a framework developed by theologians such as St. Augustine and St. Thomas Aquinas to determine when war may be morally justified. While the theory has guided Catholic thought on conflict for centuries, Pope Leo suggests it is no longer sufficient in modern conditions.
He argues that advances in technology—particularly the rise of AI—have fundamentally changed the nature of warfare, rendering traditional moral frameworks increasingly inadequate. Instead, the pope urges greater reliance on nonviolent solutions.
“Humanity possesses far more effective and capable tools for promoting human life and resolving conflicts, such as dialogue, diplomacy and forgiveness,” he wrote. “The use of force, violence and weapons reflects a relational poverty that always has disastrous consequences for civilian populations.”
Vance Signals Agreement on Doctrinal Evolution
Vance, who is both a Catholic and a vocal advocate for technological innovation, appeared receptive to the pope’s call for doctrinal reassessment. His comments suggest a willingness to reconsider how traditional teachings apply in light of new global realities.
“You have new technologies and warfare, so you have to update ‘just war’ doctrine,” Vance said. “New ways of human beings interacting with one another, so you have to kind of rethink the entire Catholic social teaching in light of the new world that we live in.”
He added that he believes this is “exactly what the pope is trying to do,” calling the effort a positive step. “So I’m glad that he did it,” Vance said.
Political and Religious Context
The vice president’s remarks come weeks after he drew criticism for invoking just war theory in April during discussions about the Trump administration’s conflict in Iran. At the time, Auxiliary Bishop James Massa of Brooklyn—chairman of the U.S. Conference of Catholic Bishops’ Committee on Doctrine—issued a statement defending the Church’s teaching without naming Vance directly.
The episode highlighted tensions between political leaders and religious authorities over the interpretation of Catholic doctrine in contemporary policy debates. Vance’s latest comments suggest a shift toward alignment with the Vatican’s evolving perspective, particularly on questions of warfare and emerging technologies.
A “Very Important Document”
Prior to the encyclical’s release, Vance had already anticipated its significance. Speaking at a May 19 press briefing, he predicted the document would offer substantial insight, even if he did not agree with all of its conclusions.
“I expect it to contain a lot of insights, some of which I’ll probably agree with, some of which I may not,” he said. “But I think that it’s going to be a very, very important document.”
As debate over artificial intelligence intensifies worldwide, both within policy circles and moral discourse, Magnifica Humanitas appears poised to shape ongoing conversations. Vance’s early reaction underscores how the encyclical is already resonating beyond ecclesiastical boundaries, entering the intersection of faith, technology, and global politics.
- Raju Hasmukh with files from OSV News
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