President Trump has slammed the intelligence of his former secretary of state after closed-door testimony revealed that Tillerson stated that President Trump was unprepared for a meeting with Putin.

According to The Daily Caller:

President Donald Trump criticized former Secretary of State Rex Tillerson Thursday after a report revealed Tillerson believed Trump was unprepared for a meeting with Russian President Vladimir Putin.

“Rex Tillerson, a man who is ‘dumb as a rock’ and totally ill-prepared and ill-equipped to be Secretary of State, made up a story (he got fired) that I was out-prepared by Vladimir Putin at a meeting in Hamburg, Germany,” Trump tweeted Thursday. “I don’t think Putin would agree. Look how the U.S. is doing!”

Rex Tillerson, a man who is “dumb as a rock” and totally ill prepared and ill equipped to be Secretary of State, made up a story (he got fired) that I was out-prepared by Vladimir Putin at a meeting in Hamburg, Germany. I don’t think Putin would agree. Look how the U.S. is doing!

— Donald J. Trump (@realDonaldTrump) May 23, 2019

Tillerson told lawmakers on the House Foreign Affairs Committee that Trump was out-prepared for a key 2017 meeting with Putin at the G20 summit in Germany, according to a report published by The Washington Post Wednesday night.

“We spent a lot of time in the conversation talking about how Putin seized every opportunity to push what he wanted,” a Committee aid told the Post. “There was a discrepancy in preparation, and it created an unequal footing.”

Tillerson also reportedly told the committee that Trump and he shared the same goals but not the same values. Tillerson did not provide statistics.