UK’s Cooper warns of an AI ‘Hiroshima’ and calls for global rules

Britain’s foreign secretary has a stark analogy for artificial intelligence. Do not wait for its Hiroshima moment before writing the rules.

Yvette Cooper will warn that AI could become the “greatest security challenge of the next decade,” according to Bloomberg. She sets it out in an essay for the Chatham House think tank, published on Monday. Governments, she argues, must agree international guardrails before the technology outpaces them.

She spelled out her thinking in an interview with the Guardian too.

The Hiroshima parallel

Cooper reaches for the nuclear age to make her point. “On nuclear, international agreement came only after the world saw the terrifying power of the new technology at Hiroshima,” she writes. “We cannot afford to wait for an AI equivalent of Hiroshima before we act.” The message is simple. Rules should come before catastrophe, not after it.

She wants the big powers at the table, the United States and China included. AI, she told the Guardian, “is going to end up being the dominant foreign policy issue that we deal with over the next two years.” That is a bold claim for a job that usually turns on wars and trade.

Why now

The warning does not come from nowhere. A recent UN report cautioned that AI could fuel cybercrime, fraud and disinformation on a large scale. It also found the technology outrunning governments. The risks are not hypothetical either. Anthropic once held back a powerful model over fears it could help find cyber vulnerabilities.

Cooper argues Britain is well placed to convene. It hosted the world’s first AI Safety Summit in 2023. That event drew world leaders and tech bosses, including Elon Musk. UK bodies are already building technical safety guardrails for advanced systems.

The harder question

Getting the US and China to agree on anything is the catch. Cooper’s own essay says Britain should expect less from Washington. She sees the US stepping back from its old role as a global referee. A world where the US pulls back is exactly the world in which shared AI rules are hardest to strike.

There is a domestic reading too. The essay lands as Labour figures position themselves for a likely Andy Burnham government.

Reports tip David Miliband for her job. A sweeping foreign-policy statement is, among other things, a marker of ambition. But the core point stands on its own. AI safety is moving from conference halls into the centre of foreign policy.

The window to shape it is narrowing. Cooper’s bet is that the world acts before its Hiroshima, not after.