Trump hits back at author's accusations

US president criticizes 'work of fiction' and claims he is 'very stable genius'

WASHINGTON - US President Donald Trump on Saturday rejected an author's accusations that he is "mentally unfit for office" and said his business career and election victory showed he is "a very stable genius".

In a series of tweets, Trump added that he is "like, really smart" in the latest pushback against a new book that portrays him as a leader "who doesn't understand the weight of his office and whose competence is questioned by aides".