Sir Ed urged the prime minister to accept that Mr Trump is “no longer a reliable partner in Ukraine or Europe’s defence”, calling for Britain to boost defence spending beyond 2.5 per cent of GDP.
Meanwhile, Sir Vince Cable, former Lib Dem leader and business secretary under the coalition government, warned that the US “in many ways is a bigger threat to [Britain] than traditional threats”, pointing to Mr Trump’s decision to publicly cosy up to Mr Putin.
Sir Keir Starmer has been urged to stand up to Donald Trump’s “torrent of lies” when he visits the United States next week, as the president accused Britain of “doing nothing” to end the war in Ukraine.
While the prime minister has expressed solidarity with Mr Zelensky as "Ukraine's democratically elected leader", he has been urged to go further when he comes face to face with Mr Trump next week.
Asked about next week’s visits by French president Emmanuel Macron and Sir Keir to Washington, Mr Trump told Fox News: “They didn’t do anything either [to end the war].