Pope Leo XIV Urges World Leaders To Ban Lethal Autonomous Weapons

​Pope Leo XIV has urged governments to ban lethal autonomous weapons, insisting that decisions involving human life must remain under responsible human control.

The Pope made the appeal on October 30, 2026, while addressing participants at a Vatican meeting titled “The Future of AI: A Dialogue Between the Vatican and the Scientific World on the Developments and Applications of Intelligent Technologies”. The event was jointly organised by the Pontifical Academy for Life and the Future of Life Institute, bringing together experts and representatives from different countries to discuss the opportunities and risks associated with artificial intelligence.

During his address, Pope Leo warned that decisions affecting human life, personal freedom and the use of military force must never be delegated entirely to machines. He encouraged countries preparing for discussions in Geneva in November to take concrete steps towards prohibiting weapons capable of independently selecting and attacking targets without meaningful human involvement.

The Pope argued that artificial intelligence should remain a tool serving humanity rather than becoming an independent authority over matters of life and death. He said technological progress must be guided by human responsibility and ethical principles, particularly when systems are developed for military purposes.

His comments reflect growing international concern about autonomous weapons systems, which use artificial intelligence and other technologies to identify, select and engage targets. Such systems raise questions about who should be held responsible when an automated weapon makes an incorrect decision, causes civilian casualties or operates in circumstances that cannot be adequately predicted.

Pope Leo also referred to the teachings of his predecessor, Pope Francis, who warned during a 2024 address to G7 leaders that no machine should ever be entrusted with the decision to take a human life. The current Pope said those concerns remain relevant as artificial intelligence becomes increasingly influential in military planning and other areas of public life.

The address outlined five key considerations for the future development of artificial intelligence. These included the importance of human choices in determining AI's future, the distinction between machines and human beings, the need to retain human control over critical decisions, the responsibility to promote the common good and the importance of establishing institutions capable of enforcing ethical standards.

On the question of human identity and responsibility, Pope Leo rejected proposals to grant artificial intelligence systems legal personhood. He argued that machines do not experience emotions, relationships, suffering or responsibility in the way human beings do. Giving AI systems legal status as persons, he warned, could make it more difficult to identify those responsible when technology causes harm.

The Pope also stressed that technological development should not be treated simply as a competition for greater power or efficiency. He argued that reliable systems serving human needs are more valuable than highly powerful technologies whose consequences cannot be properly understood or controlled. He called for innovation to benefit society broadly rather than concentrating its advantages among a small number of powerful organisations.

His appeal comes ahead of the United Nations Convention on Certain Conventional Weapons review conference, scheduled to take place in Geneva from November 16 to 20. Governments are expected to discuss the future of international rules governing autonomous weapons and whether negotiations should move towards legally binding restrictions.

The Geneva discussions are particularly important because countries remain divided over how autonomous weapons should be regulated. Supporters of stronger international controls want clear restrictions on systems that can select and attack targets without human approval. Others favour continued discussions and national-level safeguards rather than immediately committing to a new international treaty.

Humanitarian organisations and campaigners have repeatedly warned that autonomous weapons could create serious risks for civilians, particularly in complex conflict situations. They argue that automated targeting may fail to distinguish accurately between combatants and non-combatants, while the involvement of multiple developers, military operators and commanders can make accountability difficult to establish.

Pope Leo called for international institutions to move beyond general ethical principles and establish practical safeguards. He highlighted the need for shared standards, independent oversight and clear accountability mechanisms so that decisions involving AI can be examined and challenged when necessary. He also emphasised that people harmed by technological systems must have access to appropriate remedies.

The Pope's position is also consistent with his 2026 encyclical, Magnifica Humanitas, which examines the relationship between artificial intelligence, human dignity and modern warfare. The document warns against allowing technological systems to make irreversible decisions and calls for stronger international cooperation to prevent an uncontrolled military AI race.

As governments prepare for the Geneva conference, the debate over autonomous weapons is becoming an increasingly important international issue. Pope Leo's intervention adds a significant religious and ethical voice to calls for regulation, placing human dignity, civilian protection and accountability at the centre of discussions about the future of military technology.

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