The US strategy calls for an end to mass migration and criticises European policies on the issue for “creating strife”.
It also raises concerns about “censorship of free speech” and “loss of national identities and self-confidence”.
“It is far from obvious whether certain European countries will have economies and militaries strong enough to remain reliable allies,” the document states.
Trump continued to attack European leaders in an interview with Politico on Tuesday, external, when he branded them “weak” and said they had failed to control migration or take decisive action to end the war in Ukraine.
The strategy also adopts softer language towards Russia, blaming the EU for blocking US efforts to end the conflict and saying the US must “re-establish strategic stability with Russia”.
The Kremlin has welcomed the document, calling it “largely consistent” with Moscow’s vision.
Downing Street said Sir Keir spoke to Trump on Wednesday about the ongoing Ukraine peace talks, in a call with French President Emmanuel Macron and German Chancellor Friedrich Merz.
“Intensive work on the peace plan is continuing and will continue in the coming days,” a spokesperson said.
