This feud has gotten ridiculous. Republican front-runner and businessman Donald Trump is now threatening to boycott the upcoming GOP debate if host Fox News doesn't remove Megyn Kelly as a moderator.

I don't usually like the argument that takes the form of, "if candidate can't stand up to X, how can they stand up to the Islamic State?" But I do wonder how Trump will be able to handle anyone as president if he can't take the sort of pointed questions about his weaknesses that originally soured him on Kelly.

It all started last August at the first GOP debate, when Kelly asked Trump about the New York businessman's comments toward women in the past. The question was one of the most memorable of the debate, and prompted Trump to later claim: "you could see there was blood coming out of her eyes … Blood coming out of her wherever."

Kelly has recently poked fun at former vice presidential candidate Sarah Palin's endorsement of Trump, and hosted National Review editor Rich Lowry, whose magazine has come out against the Republican front-runner.

And here we are. This insignificant back and forth has caused Trump, for the fourth time this cycle, to threaten to boycott a debate. Trump said he would boycott two CNN debates if CNN President Jeff Zucker didn't donate money to charity. He also threatened to pull out of the CNBC debate if the format wasn't changed (rival Ben Carson made a similar threat as well).

This makes Fox News spokesperson Irena Briganti's statement all the more relevant: "Donald Trump is just trying to build up the audience for Thursday's debate, for which we thank him."

Trump is unlikely to actually boycott the debate and host his own town hall for rival networks, as he has claimed he would do. But if he has no plans to actually do this, his ongoing comments and actions toward Kelly are troubling.

How will Trump handle a hostile press if he is president? We know the press will be more harsh toward a Republican president, and that the press is especially hostile toward Trump, so will he just shut them out? And does Megyn Kelly, on a right-leaning network, really need to be public enemy number one to the Trump campaign?

I realize that this, like everything Trump does, is for attention, but it ultimately brings into question his ability to handle adversity and criticism.

Ashe Schow is a commentary writer for the Washington Examiner.