President Donald Trump said he would surpass Secretary of State Rex Tillerson in an IQ test, if Tillerson really called him a moron.

Last week, after NBC News reported that Tillerson, increasingly angry with Trump and other administration figures, referred to Trump as “a moron,” the president dismissed the story as “phony.”

But in an interview with Forbes magazine published Tuesday, Trump said that if the NBC report was true, he’d compare IQ test results with Tillerson and come out the smartest.

“I think it’s fake news,” Trump said in the interview. “But if he did that, I guess we’ll have to compare IQ tests. And I can tell you who is going to win.”

Tillerson last week gave an unscheduled press conference to address the story, praising his boss as “smart” and affirming his “commitment to the president and the success of our country.” Notably, he did not specifically deny calling Trump a moron.

Carlos Barria / Reuters

The secretary of state left the job of disputing the story to State Department spokeswoman Heather Nauert, who told reporters “the secretary does not use that type of language.”

Later that day, Trump said that he appreciated Tillerson showering him with praise. Despite rumblings that Tillerson may be on his way out, the president said he has “total confidence in Rex.”

Trump on Tuesday brushed off reporters asking whether his IQ comment undercut Tillerson.

“No, I didn’t undercut anybody. I don’t believe in undercutting people,” Trump said.

The president has repeatedly undermined Tillerson’s diplomatic efforts, contradicting his top diplomat and admonishing him on Twitter.

Trump met with with Tillerson and Defense Secretary Jim Mattis for lunch Tuesday.

At a press briefing that afternoon, White House press secretary Sarah Huckabee Sanders told reporters Trump’s comment was merely “a joke, nothing more than that,” and that the president “never implied that the secretary of state was not incredibly intelligent.”

Sanders repeated that Trump “has full confidence in the secretary of state.”

Asked during the State Department briefing later in the day about Tillerson’s IQ, Nauert said: “It’s high.”

“I think that the president’s allowed to joke,” Nauert added.



This story has been updated to include comments from Sarah Huckabee Sanders, as well as additional comments from Trump and Nauert.