AI as a “Hiroshima-Style” Threat: Yvette Cooper Calls for Global Rules

UK Foreign Secretary Yvette Cooper warned that artificial intelligence poses an existential risk comparable to the atomic bomb if governments fail to agree on binding development limits. In an essay for Chatham House, she argued that AI will dominate foreign-policy agendas for the next two years and urged the United States, China and other major powers to negotiate comprehensive international rules.

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Cooper linked the AI danger to the post-Hiroshima nuclear consensus, noting that global agreement on nuclear weapons emerged only after the devastation of 1945. She contended that the United States is retreating from its historic role as a global arbiter, leaving a governance vacuum that could be exploited by “malign actors,” including state-backed criminal groups, extremist organisations and hybrid-threat operators.

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The warning centres on Cooper and the UK Foreign Office, but references a broader set of stakeholders: the United States and China as primary AI developers, the European Union as a potential partner in a new security architecture, and the Labour Party’s prospective Burnham government, which may reshape the UK-EU relationship. Cooper also cited the stalled Palestine peace process, warning that attention to AI could divert focus from existing diplomatic efforts.

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If AI remains unregulated, Cooper argues, the technology could be weaponised, amplifying hybrid threats and destabilising liberal democracies. The risk extends to ongoing geopolitical issues, such as the Israel-Palestine peace plan, which she fears may be “running into the ground” without coordinated international attention.

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Cooper’s essay stresses that waiting for a catastrophic AI incident before acting would be “unaffordable.” She proposes that the UK and EU negotiate a permanent settlement on security and trade, moving beyond incremental bargaining. The UK government is finalising a new EU renegotiation package covering agriculture, electricity trading and youth visas, though the summit to announce it has been delayed pending discussions with the incoming Burnham administration. Burnham has signalled mixed intentions about re-joining the EU, adding uncertainty to the partnership’s future shape.

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The sources provide no specific details on the structure of the proposed UK-EU security partnership, nor do they present dissenting viewpoints from other governments or civil-society groups. Consequently, the precise mechanisms for an international AI governance framework remain undefined.

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• “On nuclear, international agreement came only after the world saw the terrifying power of the new technology at Hiroshima – and asked what would happen if it fell into the wrong hands. We cannot afford to wait for an AI equivalent of Hiroshima before we act.” — Yvette Cooper, UK Foreign Secretary

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• “Across the world, people are feeling the same thing – there is amazing potential here, but there is also huge risk. We are already in a world where we have malign actors who will use technology against us – whether that be hybrid threats, whether that be state-backed criminal groups or other kinds of organisations, or extremists and terror groups.” — Yvette Cooper

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• “I think AI is going to end up being the dominant foreign policy issue that we deal with over the next two years.” — Yvette Cooper

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• “There will continue to be issues where we disagree. But reduced dependence on any single ally will make us stronger.” — Yvette Cooper

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• “Cooper argues in her essay: “We need to develop a new, structured relationship with Europe, leading the development of its new security architecture, with a more European Nato at its core.” — Yvette Cooper

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The UK aims to finalize its EU renegotiation package and present it after the Burnham government takes office. Parallel diplomatic efforts are expected to address AI governance at multilateral forums, though concrete proposals have yet to emerge.

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