Having threatened riots should the Republican party deny him the nomination in the race for the White House, Trump took time out of his schedule yesterday to fire off three tweets calling out "crazy" Megyn Kelly.
First he complained that she hosted his closest Republican rival, Ted Cruz, whom he has nicknamed "lyin' Ted" on her prime-time Fox News show "The Kelly File," the second most watched program in American cable news after that of fellow Fox anchor Bill O'Reilly.
"Her bad show is a total hit piece on me. Tough!" he said.
"Highly overrated & crazy @megynkelly is always complaining about Trump and yet she devotes her shows to me. Focus on others Megyn!" he went on to write at lunchtime.
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Trump regularly posts messages from others who denigrate Kelly. The avalanche of criticism prompted one of Kelly's colleagues to hit back.
"This obsession with @megynkelly is disturbing and not presidential. Please stop. @realDonaldTrump," tweeted Janice Dean, senior meteorologist at Fox News.
Kelly brushed off the vitriol in an interview with More magazine, in which she said she found inspiration from Britain's first female prime minister, dubbed the Iron Lady for her fortitude.
"I've been thinking about that Margaret Thatcher quote where she said something like, 'I love when they attack me personally because it means they don't have a political argument left,'" she was quoted as telling the magazine.