TWITTER NEWS (U.S.) John Bolton's book alleges Trump tied Ukraine aid freeze to the Democratic investigations.

Photo via @CNNPolitics

According to an unpublished manuscript from then-national security adviser John Bolton, President Trump said $391 million in aid to Ukraine should be frozen until Ukrainian officials announced investigations into former Vice President Joe Biden and his son Hunter Biden, The New York Times first reported on Sunday. Trump responded to the allegations, saying: “If John Bolton said this, it was only to sell a book.”

Republican Senator Mitt Romney told the press on Monday that Bolton's reported revelation would "very likely" sway some of his GOP Senate colleagues to call for Bolton's testimony in the president's ongoing impeachment trial.