Speaking to the BBC's The World This Weekend he said the Republican “made concessions to Russia, which I think is fairly unprecedented, having made perfectly clear that the US troops would not defend Ukraine, that Russia might be able to keep land that Putin had taken by force [and] that Ukraine would not be able to join Nato.”.
Sir John Major has accused Donald Trump of “cuddling” up to Vladimir Putin as he warned "tin-pot” dictators around the world would be emboldened if the US agrees on a deal that leaves Russia in control of Ukrainian territory.
Ukraine's president Volodymyr Zelensky has called for the creation of a European army if the US cannot be relied on to help guarantee the continent’s security - and warned there is a “100 per cent chance” Russia will occupy other European nations if the US pulls out of Nato.
As Keir Starmer prepares for a crisis summit on Ukraine in Paris, a member of his cabinet also warned the US president any agreement would not last if Europe is, as expected, excluded from the talks.
World leaders continue to reel from Mr Trump’s announcement last week that he and Putin are to begin negotiations to end the war, triggered when Russia invaded Ukraine nearly three years ago.