Prime Minister Sir Keir Starmer has said a trade war is in "no-one's interest" after Donald Trump threatened to impose a 10% tax on imports from the UK and other countries who oppose his plans to take control of Greenland.

Making a speech in Downing Street, Sir Keir said the "right approach" was "through calm discussion" and that the use of tariffs against allies was "not the right way to resolve differences".

He reiterated his belief that decisions about the island should rest with the people of Greenland and Denmark.

Principle "cannot be set aside", he said, but he vowed to take a "pragmatic" approach, emphasising both the economic and military importance of the UK-US relationship.

While seeking to diffuse tensions, the prime minister stressed the situation was "very serious" and that it was a "moment for the whole country to pull together".