Keir Starmer and Donald Trump shake hands during a joint press conference in the East Room at the White House in February.

Downing Street has contradicted Donald Trump’s latest claims about the war in Ukraine.

The US president has said he believes Volodymyr Zelenskyy is ready to “give up” Crimea in exchange for peace – despite the Ukrainian leader explicitly ruling that out.

Russia annexed Crimea in 2014, but the Black Sea peninsula is constitutionally part of Ukraine.

Trump made his comments while flying back to America from Pope Francis’ funeral, where

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