PM Sir Keir Starmer was urged to stand up to Donald Trump’s Greenland tariff threats by closing all US military bases in Britain after calling for “calm discussion between allies” today.

He ruled out a trade war in response to the US president’s threats to invade the semi-autonomous Danish territory and slap tariffs on Britain and other European allies, adding the crisis was a “moment for the whole country to pull together.”

Mr Trump has vowed to charge several Nato members, including Britain, a 10 per cent tariff “on any and all goods” sent to the US from February 1, increasing to 25 per cent from June 1, until a deal is reached for Washington to purchase Greenland from Denmark.

He has not ruled out military action to achieve his aim of taking the territory.

Responding to Sir Keir’s comments at an emergency Downing Street address today, Stop the War convener Lindsey German said: “Trump is the biggest threat to world peace, acting completely irresponsibly and outside of international law not just over Greenland, but over Venezuela and elsewhere. 

“Starmer can’t appease him, that simply doesn’t work. 

“There are things Britain can do. There are for example over 10,000 US military personnel in Britain at the moment and it should be made very clear to Trump there isn’t a special relationship by getting rid of all US military bases here, and also from Germany and everywhere else in Europe they are based. 

“If Trump is serious about not wanting to work with Europe then we don’t need the US in Europe — they’ve been a force for war not peace for generations and it’s time we stopped supporting them in that.”

TUC general secretary Paul Nowak said: “Once again Trump’s arbitrary tariffs threaten to take a wrecking ball to key British manufacturing sectors and jobs.

“Keir Starmer is right to say this Labour government will pull every lever to protect working people.

“That’s why this government must continue to prioritise a closer trading relationship with the EU.”

Plaid Cymru leader Rhun ap Iorwerth said: “The threat to annex territory, coupled with the use of tariffs to bully allies into submission, is an unacceptable abuse of power and should be met with a far stronger challenge than that given by the Prime Minister this morning.

“Using economic coercion against democratic nations for defending collective security must be unequivocally condemned.”