President Donald Trump fired back at his former Secretary of State Rex Tillerson on Thursday morning after reports surfaced that his former top diplomat told a House committee that Russian President Vladimir Putin was more prepared than Trump ahead of a meeting in 2017.

The Washington Post reported on Wednesday that Tillerson told the House Foreign Affairs Committee that the president believed their session would be short, but instead, as the Post put it, the session” ballooned into a globe-spanning two-hour-plus session involving deliberations on a variety of geopolitical issues .”

The meeting between Tillerson and the House Foreign Affairs Committee lasted for around seven hours, according to the report.

” We expended a lot of time in the conversation talking about how Putin seized every opportunity to push what he wanted ,” a committee aide told the Post.” There was a discrepancy in preparation, and it made an unequal footing .”

On Thursday morning, Trump pushed back, quoting a” dumb as a rock” insult he previously utilized to describe his former secretary of state.

” Rex Tillerson, a man who is' dumb as a stone' and altogether ill prepared and ill equipped to be Secretary of State, made up a tale( he got fired) that I was out-prepared by Vladimir Putin at a session in Hamburg, Germany. I don't think Putin would agree. Look how the U.S. is doing !” the president tweeted on Thursday morning.