United States President Donald Trump on Tuesday challenged Secretary of State Rex Tillerson to an Intelligence Quotient test. In an interview with Forbes, Trump said, “And I can tell you who is going to win.”

Tillerson had reportedly called Trump a moron at a July 20 meeting at the Pentagon with the national security team and other Cabinet members. Responding to this, Trump on Tuesday said, “I think it’s fake news, but if he did that, I guess we’ll have to compare IQ tests.”

Trump’s comments come hours before he is scheduled to meet Tillerson and Defence Secretary James Mattis in the president’s private dining room at the White House on Tuesday, The Washington Post reported.