Former FBI Assistant Director James Kallstrom expressed his disgust with former FBI Director James Comey.

Kallstrom pushed back on Comey's claim - during Senate testimony last week - that the Trump administration lied by claiming the FBI was in disarray under his leadership.

"I don't think it was a lie," Kallstrom told host Stuart Varney. "I think he disgraced himself. His actions disgraced himself."

Comey testified on his private meetings with President Trump where he felt the president pressured him to end the investigation into former national security advisor Michael Flynn.

Kallstrom said his appraisal is that Comey is "weak" and has "zero common sense."

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The former assistant director said Comey should have resigned the day former Attorney General Loretta Lynch asked him to call the Hillary Clinton email server case a "matter" rather than an investigation.

"But he didn't. He danced with the devil," Kallstrom said.

He called Comey's decision last summer that Clinton could not be indicted on the server case "asinine" and "pathetic" and said it "infuriated" FBI agents.

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