Biden blocks sale of Nvidia AI chips to Middle East over China fears

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US President Joe Biden has rolled out a series of restrictions on semiconductor exports aimed at thwarting Beijing’s AI ambitions - Nathan Posner/Anadolu Agency via Getty Images The Biden administration has blocked sales of some of Nvidia’s most-prized microchips to the Middle East amid rising concerns about China’s access to the critical artificial intelligence resources. Nvidia, which is worth $1.2 trillion (£940 billion) and one of the world’s most valuable companies, has been ordered to seek permission when exporting chips to certain countries in the region, in an escalation of the White House’s national security curbs on advanced semiconductors. The...