The United Nations and the International Committee of the Red Cross (ICRC) have issued an urgent joint appeal for countries to establish binding international rules governing autonomous weapons systems — technologies capable of selecting and engaging targets without human intervention — warning that the world is "dangerously close to crossing a moral red line."

In a joint statement, UN Secretary-General António Guterres and ICRC President Mirjana Spoljaric declared that "the autonomous targeting of humans by machines" represents a threshold that must not be crossed, and called on states to act with "political courage" before such weapons proliferate beyond control. While the appeal stops short of demanding a blanket ban on all autonomous weapons, it calls for specific prohibitions and restrictions, noting that the rapid pace of weapons development has strained the existing international rules-based system and widened the gap between technological capability and legal oversight. The statement builds on a similar call made three years ago, which set this year as a target for action — a deadline that has not been met.

No fully autonomous weapon system has yet been confirmed in battlefield use, but both organisations say the trajectory is clear. AI-assisted and semi-autonomous weapons have featured in conflicts in Ukraine, Sudan, Gaza and the Gulf region. In Ukraine, ground robotic vehicles have largely been used for logistics and evacuation, though Kyiv is now seeking to equip armed robotic systems with firepower to reduce pressure on infantry facing an increasingly unfavourable numerical balance. Drone warfare has transformed the character of modern conflict across multiple theatres, raising fears that fully autonomous lethal systems are a short step away. Among the specific concerns raised is whether machines can recognise when a combatant surrenders, or distinguish a civilian who has inadvertently entered a conflict zone — both legally and morally critical distinctions under international humanitarian law.

The appeal comes ahead of a November conference in Geneva, Switzerland, where negotiators will meet under the framework of the Convention on Conventional Weapons to discuss whether to launch full treaty negotiations. Discussions on a potential autonomous weapons treaty have been running for a decade without producing binding limits. Guterres and Spoljaric described the November meeting as "the clearest path available" to achieving legally enforceable rules, and urged governments to seize the moment. Notably, they pointed out that scientists and engineers developing such systems have themselves called for regulation. "When the architects of this technology are calling for limits, states cannot afford to remain passive," the statement said.

The stakes, both organisations argue, extend far beyond current conflicts. "Future generations will ask whether leaders acted when there was still a chance to set limits before these weapons proliferated beyond control," they warned. Framing the issue in both ethical and practical terms, the statement insisted that decisions over life and death must not be delegated to machines, and that "innovation must serve humanity, not endanger it." Whether November's conference will deliver the political will to match that ambition remains to be seen.