Thomas Markle has been sent to jail, accused of cutting off the electronic ankle tag monitoring his movements under house arrest.

A senior US Army officer has been arrested in the UK over “allegations of espionage” related to Russia, according to British and American officials.

AI chatbot maker Anthropic is seeking a stock market valuation of up to $1.4trn (£1trn).

Donald Trump has said the FBI is looking into Nvidia CEO Jensen Huang’s affair with an alleged Chinese spy – but insisted he is a “very honourable man”.