I'm betting on Tillerson..
He made the remark in a magazine interview when asked about reports that Mr Tillerson had called him a moron.
"I think it's fake news," Mr Trump told Forbes, "but if he did that, I guess we'll have to compare IQ tests. And I can tell you who is going to win."
Mr Trump is due to have lunch on Tuesday with Mr Tillerson.
Reports have swirled of a schism in the Trump administration between the commander-in-chief and his top diplomat, as the US faces a host of vexatious foreign policy conundrums, from North Korea to Iran.
Last week Mr Tillerson called a news conference to deny reports that he was considering quitting.
MORE @ BBC
He made the remark in a magazine interview when asked about reports that Mr Tillerson had called him a moron.
"I think it's fake news," Mr Trump told Forbes, "but if he did that, I guess we'll have to compare IQ tests. And I can tell you who is going to win."
Mr Trump is due to have lunch on Tuesday with Mr Tillerson.
Reports have swirled of a schism in the Trump administration between the commander-in-chief and his top diplomat, as the US faces a host of vexatious foreign policy conundrums, from North Korea to Iran.
Last week Mr Tillerson called a news conference to deny reports that he was considering quitting.
MORE @ BBC
