Pope Leo XIV issued his first encyclical on Monday, calling for the robust regulation of artificial intelligence [1].

The document, titled *Magnifica Humanitas*, addresses the intersection of theology and technology. It warns that without global oversight, AI could accelerate warfare and strip humans of moral agency in lethal decision-making [2].

Writing from Vatican City, the Pope focused on the risks of autonomous weapons systems. He said, "It is not permissible to entrust irreversible, lethal decisions to AI systems" [4]. The encyclical argues that removing human oversight from the use of force creates a theological and ethical vacuum [3].

Beyond warfare, the Pope addressed the economic and social implications of the technology. He expressed concern regarding the concentration of power within the tech industry. "Control of artificial intelligence must not remain in the hands 'of a few'" [2], he said.

The document also touches upon data privacy and the protection of vulnerable populations. The Pope emphasized that the ownership of the data fueling these systems should not be restricted to private corporations. He said, "Ownership of AI data should not be left solely in private hands; policymakers must protect the rights of workers and children" [3].

This first major theological document from Pope Leo XIV serves as a formal call to action for global policymakers. The text urges governments to establish frameworks that prioritize human dignity over corporate profit, or military advantage [2].

The encyclical was released on May 25, 2026 [1].

"It is not permissible to entrust irreversible, lethal decisions to AI systems."

The issuance of *Magnifica Humanitas* signals that the Vatican views AI not merely as a tool, but as a fundamental challenge to human ethics and sovereignty. By specifically targeting autonomous weapons and data monopolies, the Pope is aligning the church with international movements seeking a ban on 'killer robots' and more aggressive antitrust actions against Big Tech.