Sir Keir Starmer has issued a stern six-word warning to European allies as he hosted a major security summit in London over the war in Ukraine and the threat of Russia.

Speaking to leaders gathered at Lancaster House, the Prime Minister told them: "We gather here today because this is a once-in-a-generation moment for the security of Europe and we all need to step up."

Ukrainian President Volodymr Zelensky was among 19 leaders from around the world - minus the Americans - for the crisis talks, with US President Donald Trump's isolationist rhetoric putting Washington's commitment to European security in doubt.

Mr Zelensky has so far been given a warm welcome having visited Downing Street yesterday, and he is .

It's a far cry from Friday when the Ukrainian President was berated by and his Vice-President in the Oval Office at the White House when both men called him "disrespectful" and Mr Trump said he was "gambling with World War III".

Sir Keir reaffirmed the UK's backing for Ukraine in a warm meeting on Saturday, but also hopes to keep Trump onside to deter further aggression from Putin.

Today, Mr Zelensky and Mr Starmer warmly embraced and had a short conversation outside the venue before heading inside.

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