Trump rage-tweets at 'lying' ex-DNI Clapper for questioning his mental stability

President Donald Trump was very busy tweeting on Thursday, as he lashed out at former President Barack Obama, former Director of National Intelligence James Clapper, and even the leaders of his own party.

In Clapper's case, the president took issue with his recent decision to publicly question Trump's mental fitness to be in the Oval Office.

“I really question his ability to be — his fitness to be — in this office,” Clapper told CNN earlier this week, while also describing the president's behavior as “scary and disturbing.”

In response, Trump called out Clapper for not telling the truth about the full scope of the National Security Agency's domestic spying operations during Congressional testimony in 2013.

"James Clapper, who famously got caught lying to Congress, is now an authority on Donald Trump," Trump wrote. "Will he show you his beautiful letter to me?"

In addition to questioning Trump's mental stability, Clapper also said that the president suffered from a "complete intellectual, moral and ethical void."