Prime minister will host more than a dozen countries over weekend as Europe tries to secure deal to end war

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Keir Starmer will hold talks with Ukraine’s Volodymyr Zelenskyy and Italy’s Giorgia Meloni in Downing Street on Sunday before a major London defence summit aimed at securing “lasting and enforced” peace in Ukraine.

Fresh from his trip to see Donald Trump in the White House on Thursday, Starmer has headed back to London to host the defence summit, where more than a dozen world leaders will gather to discuss Ukraine.