Fox News boss Roger Ailes backs Megyn Kelly: ‘Donald Trump rarely apologizes’ — but he should
Fox News CEO Roger Ailes (AFP)

Fox News CEO Roger Ailes has stepped in amid another attack on anchor Megyn Kelly by Republican presidential frontrunner, Donald Trump.

According to CNN Money, Fox News issued a "blistering" statement in the wake of Trump's latest round of attacks on Kelly, who returned from vacation this week.

"Donald Trump's surprise and unprovoked attack on Megyn Kelly during her show last night is as unacceptable as it is disturbing," said Ailes on Tuesday.

"I fully support her as she continues to ask the probing and challenging questions that all presidential candidates may find it difficult to answer," he went on.

Trump launched a fusillade of insulting tweets at Kelly on Monday night, saying things like "The bimbo is back in town" and that Kelly has "come back looking like Nancy Grace."

"Megyn Kelly represents the very best of American journalism and all of us at Fox News Channel reject the crude and irresponsible attempts to suggest otherwise."

"Donald Trump rarely apologizes, although in this case, he should," Ailes concluded.

The animus began after the first presidential primary debate in which Kelly asked Trump about his history of calling women he disagrees with "dogs" and "fat, disgusting pigs."

Trump took umbrage, feeling that he was being unfairly targeted by Kelly. He went on to say that Kelly was out to get him and that she had blood in her eyes and "coming out of her whatever" during the debate.