Donald Trump with Keith Kellogg, pictured in 2017.Donald Trump’s envoy to Ukraine has issued a bleak warning to Vladimir Putin about the Russian leader’s ongoing reluctance to reach a peace deal.The US president, who has expressed great sympathy for Moscow over its brutal invasion of its European neighbour, has become increasingly frustrated with his Russian counterpart in recent weeks.On his social media platform Truth Social last night, Trump wrote: “What Vladimir Putin doesn’t realise is that if it weren’t for me, lots of really bad things would have already happened to Russia, and I mean REALLY BAD. He’s playing