A dozen Republican U.S. lawmakers urged the administration of President Joe Biden on Friday to address the use of Chinese-manufactured agriculture drones, saying their use on American farms poses national security risks. Elise Stefanik, Ashley Hinson and John Moolenaar, who chairs a select committee on China, asked the Agriculture Department and Cybersecurity and Infrastructure Security Agency to detail the administration's efforts to address risks posed by aerosol-dispensing drones. The lawmakers asked for a briefing by Sept. 30, citing the large number of drones produced by Chinese drone manufacturer DJI as a security concern.

Rishi Sunak has hailed this week's artificial intelligence summit as a diplomatic breakthrough after it produced an international declaration to address risks with the technology. Here are five things we have learned from the summit. The prime minister spent diplomatic capital convening global leaders, tech executives, academics and civil society figures at Bletchley Park in Milton Keynes, the base for second world war codebreakers. Those attending included the US vice-president, Kamala Harris, the European Commission president, Ursula von der Leyen, award-winning computer scientists, executives at all the leading AI companies – and Elon Musk. Even if Emmanuel Macron and Joe Biden were among the no-shows, the gathering had political and commercial heft.

The White House has announced measures to address the risks of an artificial intelligence arms race, as the US vice-president, Kamala Harris, met chief executives at the forefront of the industry's rapid advances. In a statement released as Harris prepared to meet the leaders of ChatGPT, Google and Microsoft, the US government said firms developing the technology had a "fundamental responsibility to make sure their products are safe before they are deployed or made public". Concerns are mounting that if AI is allowed to develop unchecked, its application by private companies could threaten jobs, increase the risk of fraud and infringe data privacy. The US government said on Thursday it would invest $140m (£111m) in seven new National AI Research Institutes, to pursue AI advances that are "ethical, trustworthy, responsible, and serve the public good". AI development is dominated by the private sector, with the tech industry producing 32 significant machine-learning models last year, compared with three produced by academia.