Keir Starmer hands the invitation letter from King Charles to Donald Trump.As a piece of political theatre, it took some beating.Sitting down in the Oval Office for his first face-to-face meeting with Donald Trump since his re-election, Keir Starmer reached into the inside pocket of his suit and produced an envelope.The prime minister could barely contain his excitement as he told the president: “It is my pleasure to bring from His Majesty the King a letter – he sends his best wishes and his regards, of course – but he also asked me to bear this letter and bring it to you.”In it, King Charles invited Trump to come to the UK for a second state visit, an unprecedented honour for a sitting president.“The answer is yes,” Trump told the PM. “I look forward to being there and honouring the King.”But if Starmer hoped that appealing to Trump’s love of the