British MPs push back on Trump's 'civilization' threat against Iran, urge end to 'complicity'

UK lawmakers on Tuesday pushed back on US President Donald Trump's threat that he would end Iran's civilization, calling on the British government to withdraw US access to UK air bases.

Ed Davey, leader of Liberal Democrats, said Prime Minister Keir Starmer faces a choice after Trump's latest "shocking threats."

"Withdraw US access now to UK air bases, or risk letting British soil be used to commit war crimes," he wrote on US social media company X.

Separately, Davey said, "Donald Trump's latest shocking threats against Iran would amount to war crimes."

His remarks came after Trump earlier Tuesday threatened that "a whole civilization will die tonight," as his deadline for reaching a ceasefire agreement with Iran is coming to an end tonight.

"A whole civilization will die tonight, never to be brought back again. I don’t want that to happen, but it probably will," he wrote on his Truth Social platform.

Adnan Hussain, an independent lawmaker, called the threat "catastrophic recklessness," and "dangerous lunacy."

"Nuclear weapons in the hands of mad men like this put all humanity at risk. Disarmament is no longer a distant goal; it is an urgent necessity. An absolute must," he said on X.

In another post, Hussain also noted that Britain cannot quietly facilitate war while claiming distance from it.

"The use of UK airbases for US military action must end immediately," he said, urging the government to make clear that it does not support or endorse "these actions."

Jeremy Corbyn, an independent lawmaker who is also a former leader of Labour Party, said: "We warned our government it was dragging Britain into an illegal war — and that the consequences would be catastrophic."

He added: "Enough. End UK complicity now!"

Zarah Sultana, Your Party lawmaker, said the genocide in Gaza "wasn't enough for them," accusing the US of wanting "genocide in Iran too."

"This Labour government is still handing them British bases to launch their illegal wars from. Keir Starmer's hands are covered in blood," she wrote on X.

Earlier, Trump threatened to bomb power stations and bridges across Iran if Tehran failed to reopen the Strait of Hormuz and reach an agreement by Tuesday night at 8 pm EDT (0000GMT Wednesday).

Regional escalations have continued to rage since Israel and the US launched an offensive against Iran on Feb. 28, killing more than 1,340 people, including then-Supreme Leader Ayatollah Ali Khamenei. Iranian authorities have not updated the toll in recent days.

Tehran has retaliated with drone and missile strikes targeting Israel, Jordan, Iraq, and Gulf countries hosting US military assets, causing casualties and damage to infrastructure while disrupting global markets and aviation.