UK Foreign Secretary compares AI risks to Hiroshima, calls for global rules

UK Foreign Secretary Yvette Cooper published an essay for the Chatham House think tank on 6 July 2026, warning that AI may become "the main security challenge of the next decade." Cooper urged the international community to draw up global regulatory rules in advance rather than wait for a technological catastrophe, which she likens to the nuclear bombing of Hiroshima.

What does the Hiroshima analogy mean?

The nuclear bombings of Hiroshima and Nagasaki in August 1945 killed between 130,000 and 220,000 people. International treaties on nuclear arms control came only years later, after the catastrophe had happened and the Cold War had intensified the arms race. Cooper is convinced that the same scenario must not be allowed to repeat with AI. Mechanisms of international oversight should exist beforehand, not appear as an emergency response to something that has already happened.

The Foreign Secretary set out her warning in an essay for Chatham House, one of the most authoritative international think tanks on global security. Publishing in this format is a standard tool of British diplomacy for launching a broad discussion among experts and government officials.

• Author: Yvette Cooper, UK Foreign Secretary
• Venue: Chatham House think tank, London
• Date: 6 July 2026
• Key thesis: AI is potentially "the main security challenge of the next decade"
• Appeal: global rules before an AI catastrophe, not after it

Why the UK is taking on AI diplomacy

In November 2023, the UK hosted the first AI Safety Summit at Bletchley Park, attended by the US, China, the EU and leading AI companies including OpenAI, Google DeepMind and Anthropic. The meeting ended with the Bletchley Declaration on the risks of frontier AI, but no legally binding treaty was adopted. Since then, London has consistently positioned itself as a neutral venue for negotiations.

Meanwhile, the regulatory approaches of the major powers have diverged further. The European Union adopted the AI Act, the world's first comprehensive AI law. The US acts through presidential executive orders and sector-specific standards. China is building its own system of rules for generative models. There is still no single international agreement, no equivalent of the Treaty on the Non-Proliferation of Nuclear Weapons. Cooper calls this gap strategically dangerous.

"Don't wait for an AI

Hiroshima to write the rules" is the gist of the Foreign Secretary's warning.

The statement comes amid growing real-world threats: autonomous weapons systems, AI-enhanced cyberattacks on critical infrastructure and state disinformation operations on a new scale have long ceased to be hypothetical scenarios.

What this means

Cooper's essay is a diplomatic signal, not an academic exercise. A foreign minister typically publishes such pieces as a prelude to concrete initiatives at the G7 or UN level. If the Hiroshima analogy takes hold in official diplomatic discourse, it could catalyze negotiations on a global AI treaty before the technology's power finally outpaces the international community's ability to control it.