In an extraordinary and unprecedented public defence of his own mental stability, Donald Trump issued a volley of tweets that seemed guaranteed to add fuel to a growing constitutional crisis.
Suggestions that he was mentally unfit to be president were out of “the old Ronald Reagan playbook”, Trump wrote on Saturday.
“Actually,” the president added, “throughout my life, my two greatest assets have been mental stability and being, like, really smart.”
He also said he “would qualify as not smart, but genius ... and a very stable genius at that!”
Michael Wolff, the author of the book that precipitated fierce debate over Trump’s fitness to be president, declined to comment on Trump’s latest claim.