On Thursday, Trump's former personal lawyer and fixer vowed to show how the US President cheated his way into winning the 2016 presidential election with Russia's help.
"Trump had cheated in the election, with Russian connivance, as you will discover in these pages, because doing anything — and I mean anything — to 'win' has always been his business model and way of life," Cohen writes in the book's foreword, which was published online on Thursday.
The 3,700-word foreword does not entail any details regarding Russia's interference during the last presidential election, and it was unclear whether the book would.
Former Special Counsel Robert Mueller last year concluded that Russia waged a major campaign to help Trump to victory in 2016.
Mueller did not find evidence of a criminal conspiracy between Trump's campaign and Russia, but he did detail extensive contacts between the campaign and Russian operatives.
Cohen worked closely with Trump for years before turning against him, most publicly in testimony to Congress last year prior to Trump's impeachment.
Michael Cohen said he knows where Trump's metaphorical "skeletons" are buried because he buried them.
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