WATCH: Byron York says Vindman was the driving force behind Trump Impeachment

Impeachment witness Alexander Vindman was the driving force behind the Trump-Russia collusion push and impeachment according to Byron York.

York writes about this revelation in his new book “Obsession: Inside the Washington Establishment’s Never-Ending War on Trump.”

York told Laura Ingraham Wednesday while appearing on her show “It didn’t take a real rocket scientist that the source of this, the original source of this, was Lt. Col. Vindman.”

He continued “If you remember early on in the Ukraine matter, the Democrats said they wanted the whistleblower to testify, and then they changed their mind and they didn’t want the whistleblower to testify and they began to shut off any Republican attempts to find out who the whistleblower was.”

York then asked “So the question is if the whistleblower wasn’t in the White House, how did he learn what was going on?”

According to York, Vindman was one of the people who listened to Trump’s call with Ukrainian President Volodymyr Zelensky, but York says he “was the only one who was disturbed by what took place. He was the only one who thought there was a problem there.”

WATCH: