Pope Leo Calls for AI to be ‘Disarmed’ in Landmark First Encyclical
Pope Leo XIV has issued a sweeping, urgent appeal to the global community, declaring that artificial intelligence “now demands to be disarmed” and stripped of the corporate and military logics that threaten to turn the technology into “an instrument of domination, exclusion, and death.” In Magnifica Humanitas (“Magnificent Humanity”)—the highly anticipated first encyclical of his papacy released on Monday—the first U.S.-born pontiff framed the rapid ascent of AI as the defining moral and spiritual challenge of the modern era. Speaking to hundreds of clergy and laypeople gathered at the Vatican’s Synod Hall, Pope Leo drew a direct parallel between the existential threat of unchecked algorithms and the historical peril of nuclear proliferation, asserting that abstract ethical charters are no longer sufficient to protect humankind.
The encyclical levels its sharpest condemnations against the deployment of AI in modern warfare, explicitly stating that it is “not permissible” to hand over lethal, irreversible decisions to automated weapon systems. Pope Leo warned that the rise of autonomous combat tech is accelerating an “inhuman evolution” and creating a “normalization of war” that fundamentally desensitizes societies to the true human cost of conflict. He argued that the Catholic Church’s traditional “just war” doctrine has effectively become outdated due to the borderless, uncontrollable scale of destruction that machine-driven warfare can unleash. To prevent accountability from collapsing entirely into “the machine,” the pontiff demanded that all military technology maintain an “identifiable and verifiable” chain of human command capable of retracing every decision to strike.
Beyond the battlefield, the 19-chapter manifesto takes direct aim at Silicon Valley, criticizing the profit-driven transhumanist ideologies of prominent tech entrepreneurs. The Pope expressed deep alarm over “opaque algorithms” controlled by a small handful of private corporations, warning that automated platforms are already creating new forms of dehumanization by blocking access to healthcare, employment, and legal security based on data tainted by prejudice. He strongly cautioned that substituting human labor with AI on a massive scale solely to maximize corporate productivity could trigger an unprecedented “social calamity.” In a historic acknowledgment, Leo noted that the Church must vocalize these technical injustices early, explicitly citing the institution’s past historical “blindness and complicity” during the era of transatlantic slavery as a moral failure that must never be repeated.
The Vatican’s rollout of the document featured an unprecedented appearance by Christopher Olah, the co-founder of the AI safety firm Anthropic, signaling the Holy See’s intent to engage directly with the frontier of tech development. The encyclical’s rigid push for robust, independent legal frameworks stands as a direct ideological challenge to the aggressive deregulation strategy championed by the Trump administration in Washington. Dismissing naive techno-optimism, Pope Leo emphasized that human limits—such as aging, illness, and vulnerability—are not engineering defects to be optimized by code, but foundational aspects of human flourishing. He concluded with a direct appeal to global policymakers and researchers to enact strict public oversight, reminding the world that the economic and technological order must always remain subordinate to human dignity.
