Six O'Clock News

President Trump has threatened the UK and its European allies with escalating trade tariffs unless the United States is permitted to purchase Greenland. In a social media post, he said a 10% levy would take effect from the 1st of February, rising to 25% from the 1st of June if no deal is reached. Trump added that the US is “immediately open to negotiation” with Denmark and the other countries involved.

An employment tribunal has ruled that an NHS trust violated the dignity of a group of nurses by allowing a transgender woman to use female changing facilities at Darlington Memorial Hospital.The Chief Constable of West Midlands Police has announced his immediate retirement amid intense pressure over the handling of the Maccabi Tel Aviv match against Aston Villa.A new life-extending drug for prostate cancer is to be made available on the NHS in England.And customers across the East Midlands are complaining about the quality of a manufacturer’s pork pies.

Robert Jenrick has joined Reform UK, hours after being sacked from the shadow cabinet, and thrown out of the Conservative Party. Also: The foreign secretary, Yvette Cooper, says more needs to be done to boost NATO defences in the Arctic. And four astronauts from the International Space Station are safely back on earth, after an emergency trip home for medical reasons.

The Home Secretary, Shabana Mahmood, says she has lost confidence in the head of West Midlands Police, after the force cited inaccuracies created by artificial intelligence to justify banning Israeli football fans from a game last year. Also: Iran has vowed to fast track trials for people arrested in connection with the wave of anti-government demonstrations. And the Conservative leader, Kemi Badenoch, has accused the prime minister of having "no sense of direction" after the government dropped plans for a mandatory digital ID to prove the right to work.

President Trump has urged anti-government demonstrators in Iran to "keep protesting" -- telling them "help is on the way", without giving any detail. Also: Central bankers from around the world express "full solidarity" with the chairman of the US Federal Reserve, who's facing a criminal investigation. And the former Manchester United player, Michael Carrick, takes charge for the rest of the season.