The resurfacing of an affectionate greeting to paedophile Jeffrey Epstein, alleged to have come from Lord Mandelson, raises huge questions.
It couldn't have come at a worse moment - days before Donald Trump's state visit to the UK, in which Mandelson, the UK's ambassador to Washington, will play a significant role.
While he focuses on crafting Anglo-American collaboration on technology, his judgment is under scrutiny on both sides of the Atlantic.
Newly released files, which had been demanded by the House of Representatives Oversight Committee on Capitol Hill, appear to contain notes he sent to Jeffrey Epstein.
Follow updates: White House denies Trump behind birthday note
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The messages inside Epstein 'birthday book