Pope Leo warned Monday that some autonomous AI-powered weapons systems are practically beyond any human reach to control [1, 2].

The warning comes as the Catholic Church leverages its moral authority to influence global tech policy, urging a shift from commercial competition toward ethical oversight.

Speaking in Vatican City during the presentation of his first encyclical on AI, titled "Magnifica Humanitas," the Pope called for governments to slow down and tightly regulate the development of artificial intelligence [1, 3]. He said that human authority must be retained and that governments should maintain a constant dialogue with developers [1].

Pope Leo specifically highlighted the dangers of autonomous weaponry. "Some autonomous weapons systems are practically beyond any human reach to control," he said [2]. He said that these systems could fuel conflicts and lead to new forms of digital slavery that dominate humanity [1].

The Pope also addressed the motivations driving the current technological surge. He said a race for ever more powerful algorithms and larger datasets, driven by the desire to secure geopolitical or commercial dominance, must be halted [1].

To mitigate these risks, the Pope urged a framework based on transparency. "We must confront AI challenges with regulation and transparency," he said [3]. The call for regulation aims to ensure that AI technologies are developed ethically, and remain under human oversight to prevent the erosion of human dignity [1].

Some autonomous weapons systems are practically beyond any human reach to control.

This intervention marks a significant escalation in the Vatican's engagement with emerging technology. By framing AI weapons as a threat to human control and dignity, the Pope is attempting to shift the global conversation from technical capability to moral imperative, potentially influencing international treaties on autonomous weapons systems.