Political consultant Roger Stone, who served as a long-time political adviser to Donald Trump, tried to dismantle the Russia investigation during an interview with Newsmax TV, saying the probe has roots in the "fabricated dossier" put together about then-candidate Donald Trump.

Stone, who recently authored "Stone's Rules: How to Win at Politics, Business, and Style," appeared on Tuesday's "America Talks Live" and said the Russia probe is "the biggest, single political scandal in American history. In essence, they used a fabricated dossier to justify state surveillance of the Republican candidate for president of the United States.

"That's using the government's authority and capability to spy on the Trump campaign. And now, incredibly, we've learned that they used the FBI to insert spies and infiltrate the Trump campaign."

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Special counsel Robert Mueller is leading a Department of Justice investigation into whether the Trump campaign colluded with Russia. Stone has entered Mueller's radar because of his alleged ties to WikiLeaks and its founder Julian Assange. He was also a subject of FBI surveillance in the early days of the counterintelligence operation against certain members of the Trump campaign.

"We have two crooks running the Justice Department," Stone said, referencing Attorney General Jeff Sessions and Deputy Attorney General Rod Rosenstein. "The fact that Jeff Sessions will not hand over to Congress information regarding the FISA warrant surveillance of Roger Stone, Paul Manafort, and Carter Page is criminal."

It has been alleged Stone had some sort of channel to the Russians, whether through WikiLeaks or otherwise, a charge he denies.

"This is an egregious smear, and in all honesty, the question — which I've answered again, and again, and again — grows tedious," Stone said.

Stone's roots in politics go back to the Nixon campaign, when he worked for his 1972 re-election campaign. He has since worked with countless other Republicans over the years, including former Presidents Ronald Reagan and George H.W. Bush.

Regarding the Russia probe, Stone said he supports calls to appoint a second special counsel to investigate how the FBI and DOJ started and conducted the Trump campaign surveillance.

"We have text messages from [FBI agent] Peter Strzok saying [former President Barack] Obama wanted to be briefed on everything," Stone said. "So, when it comes to the phony dossier, what did Obama know and when did he know it? They're covering up the greatest scandal in American history."

And he said the Watergate scandal of the early 1970s is peanuts compared to what the government is alleged to have done to the Trump campaign.

"They were inserting moles to create faux evidence of Russian collusion as part of what FBI agent Peter Strzok referred to as their insurance policy against Donald Trump's election," Stone said. "This makes Watergate look like a second-rate burglary. What we have here today is far more egregious."