Appearing on MSNBC with host Alex Witt, former FBI Assistant Director for Counterintelligence Frank Figliuzzi blew up Donald Trump's claim that he is the victim of a "Ukraine Witchhunt."

He then added that the whistleblower who went to the inspector general with a serious charge against the president should take what he has and go to the FBI within a week if nothing happens.

"We've got to get to the bottom of this, and we can't rely on leaks and certain reporters getting certain tidbits of information," the ex-FBI man explained. "This needs to be explored and it's likely this could end up in a criminal investigation."

Appearing on MSNBC's "AM Joy," a longtime veteran CIA official said the whistleblower, who ran to the inspector general with a complaint about Donald Trump asking Ukraine's president for dirt on Joe Biden, should expect the president and his aides to come after them.

Speaking with host Joy Reid, Jonna Mendez said she saw the first warnings signs that something was up in the U.S. intelligence community when the president forced DNI head Dan Coats and his top deputy out.

"Through the lens of someone who spent 27 years at the CIA, the thing that caught my eye instantly was Dan Coats' resignation follow by Sue Gordon," Mendez explained. "The fact that Dan Coats went into a meeting and said 'Sue, you've got to resign' and that she did, truncating a career that clearly hadn't reached its zenith."