Why it matters: Trump participated extensively in Woodward's research for the book, sitting for 17 interviews at the White House, Mar-a-Lago and over the phone between December 2019 and late July 2020, CNN reported.
"Everybody does phony books on Donald Trump and Republicans, just like the Fake Dossier, which turned out to be a total fraud perpetrated by Crooked Hillary Clinton and the DNC," the president tweeted.
The big picture: The book, a follow-up to Woodward's 2018 tome "Fear," is expected to have insider knowledge on Trump's recent thoughts and actions on national security, the coronavirus pandemic, the economy and the Black Lives Matter protests.
Woodward did hundreds of hours of interviews with first-hand witnesses in preparation, according to his publisher.
He also obtained notes, emails, diaries and calendars — as well as 25 previously unseen personal letters between Trump and North Korean leader Kim Jong-un.