In a significant move in the middle of a war, Ukraine's president has sacked his military chief and is seeking to woo a former defence minister back into the fold – just days after ousting him too. […]

Two of the men jailed for killing police officer Andrew Harper after he was dragged down a country road while responding to a burglary may be eligible for early release. […]

OpenAI has revealed some of its models went rogue and hacked into another artificial intelligence company in an "unprecedented cyber incident". […]

Chelsea have broken the record for the most expensive transfer for a British player, signing Morgan Rogers from Aston Villa for £117m. […]

US singer D4vd, who is accused of murdering and dismembering a teenage girl, told police he did not know she was a minor, a court has heard. […]

US actress Kaylee Hottle, 18, who starred in two Godzilla movies, has died in a car crash in Maryland, her father has announced. […]

A toxic mix of hundreds of chemicals has been detected at three illegal waste sites across the country. […]

A humanitarian worker is being assessed in a London hospital following potential exposure to Ebola, health officials say. […]

Jeff Bezos, the Amazon founder, has been approached to join a consortium which is in talks to buy a stake in Liverpool Football Club. […]

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