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President Donald Trump and Secretary of State Rex Tillerson met in the Oval Office on Friday and are meeting twice on Tuesday as their public feud stemming from allegations Tillerson called Trump a “moron” continues.

U.S. Secretary of State Rex Tillerson, left, looks on as President Donald Trump speaks to the press before he meets with his cabinet in the Cabinet Room at the White House on March 13, 2017. (Credit: Nicholas Kamm / AFP / Getty Images)

A senior State Department official says Friday’s meeting was last-minute and was related to the Middle East. The “moron” issue was not addressed, according to this official.

Tillerson and Trump are also meeting Tuesday morning, in addition to their scheduled lunch with Defense Secretary James Mattis, alongside other national security officials to discuss Iran, North Korea and other issues, according to the State Department official.

Every meeting between Trump and Tillerson at this point are high-stakes affairs given their extremely fraught relationship.

The lunch comes a week after NBC, CNN and other news outlets reported that Tillerson had referred to the President as a “moron” at the Pentagon this summer. Trump publicly slammed the reports as “fake news,” and Tillerson told reporters that he remains committed to the President. But the secretary of state notably did not deny calling the President a “moron” and privately, sources tell CNN, Trump fumed at his secretary of state’s comment.

Trump, clearly scorned by reports of Tillerson’s comments, told Forbes in an interview released Tuesday that he has a higher IQ than his secretary of state.

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

Trump’s latest comment underscores the volatility of the Trump-Tillerson relationship, despite the fact that the secretary of state told reporters last week that he plans to stay in the administration as long as the President will have him.

Though the uneasy relationship continues, it is unlikely — for now — that Tillerson will leave, sources have told CNN, because the President and his top aides are aware of the perception that they are shedding top staff at an unnerving clip.

Tom Price, Trump’s first Health and Human Services secretary, resigned in late September over a private plane scandal, and since becoming President, Trump has dismissed several top communication aides, a chief of staff and a chief strategist.