US and China opt out of military AI declaration as only 35 nations endorse governance principles

Reviewed byNidhi Govil

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At a military AI summit in Spain, the US and China declined to sign a declaration on governing AI deployment in warfare, with only 35 of 85 nations endorsing 20 principles. The refusal highlights tensions over responsible AI use in military operations, as governments face a prisoner's dilemma between implementing restrictions and maintaining competitive advantages against adversaries.

US and China Decline Military AI Declaration at REAIM Summit

The United States and China opted out of signing a joint AI declaration at the Responsible AI in the Military Domain (REAIM) summit held in A Coruna, Spain, marking a significant setback for international efforts to establish governance frameworks for military AI . Only 35 countries out of 85 attending nations agreed to endorse 20 principles governing the deployment of AI in warfare, representing roughly a third of participants at the summit

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. The absence of these military heavyweights from the agreement underscores deepening global tensions over how artificial intelligence should be regulated in combat scenarios.

Source: Reuters

Source: Reuters

Growing Concerns Over AI Use in Military Operations

The non-binding declaration reflects mounting anxiety among governments that rapid advances in artificial intelligence could outpace regulatory frameworks around its military use, raising the risk of accidents, miscalculation, or unintended escalation . Dutch Defence Minister Ruben Brekelmans characterized the challenge as a prisoner's dilemma, where nations must balance implementing responsible restrictions while avoiding self-imposed limitations compared to adversaries. "Russia and China are moving very fast. That creates urgency to make progress in developing AI. But seeing it going fast also increases the urgency to keep working on its responsible use. The two go hand-in-hand," Brekelmans told Reuters .

Key Principles and Human Responsibility Over AI-Powered Weapons

The 20 principles outlined in the declaration emphasized human responsibility over AI-powered weapons, encouraging clear chains of command and control, and promoting information sharing on national oversight arrangements where consistent with national security

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. The document also stressed the importance of risk assessments, robust testing, and comprehensive training and education for personnel operating military AI capabilities. Major signatories included Canada, Germany, France, Britain, the Netherlands, South Korea, and Ukraine .

Shifting Dynamics from Previous Summits

The reluctance to sign represents a notable shift from previous military AI summits. At gatherings in The Hague and Seoul in 2023 and 2024 respectively, around 60 nations—excluding China but including the United States—endorsed a modest "blueprint for action" without legal commitment

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. This year's reduced participation suggests increasing hesitation among nations to commit to more concrete policies, even in non-binding formats. Yasmin Afina, a researcher at the U.N. Institute for Disarmament Research who advised on the process, noted that some countries remained uncomfortable endorsing more specific policies despite the document's non-binding nature .

Transatlantic Tensions and Future Implications

Tensions in relations between the United States and European allies, coupled with uncertainty over how transatlantic ties will evolve in coming months and years, contributed to the hesitation among some countries to sign joint agreements, according to several attendees and delegates

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. This development raises questions about whether meaningful international consensus on weapons control and human oversight mechanisms can be achieved when major military powers refuse participation. The gap between nations willing to commit to responsible AI principles and those prioritizing strategic flexibility may widen as military AI capabilities advance rapidly, potentially increasing risks of miscalculation in future conflicts.

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