Former Watergate prosecutor Nick Akerman on Monday predicted Donald Trump will be doomed by EU ambassador Gordon Sondland’s upcoming public House testimony in the impeachment inquiry into the president.

“Donald Trump is toast,” Akerman told CNN.

“Sondland is going to come out and tell the whole story,” he predicted. “He’s going to detail it, he’s going to have documents to detail it, you’ve got lots of witnesses corroborating it.”

“I mean there’s no question that they were trying to get the Ukrainian government to announce an investigation into (former Vice President) Joe Biden,” Akerman added. “And using money as appropriated by the U.S. Congress to do that. Pure bribery.”

Sondland will testify on Wednesday morning. He has already walked back his initial closed-door claim that he didn’t recall any discussions about Ukraine announcing an investigation into the Bidens allegedly in exchange for withheld military aid.

Akerman said Sondland has “got no choice here” but to “come clean” about his role and Trump.

“Otherwise he’s gonna wind up like Roger Stone in federal prison, with Roger Stone as his roommate. I mean, he does not want that to happen,” Akerman explained, referencing the GOP strategist and longtime Trump associate who was on Friday found guilty on seven charges relating to lying to investigators probing Russian interference in the 2016 presidential election.

Stone will be sentenced next year.

“If I were his lawyer, I would be sitting on him pretty hard and making sure that he told everything he knew, every truthful bit of evidence just to make sure he doesn’t go down for Donald Trump,” Akerman, referring to Sondland, added.

Check out the clip here:

Related...

Nicolle Wallace Reveals How She Deals With Her Donald Trump-Loving Parents

Dan Rather Exposes Shady GOP Tactic That 'Jumped Out' In Impeachment Hearings

Fox News’ Distortion Of Impeachment Hearings Laid Bare In CNN Supercut

Story continues

CNN Fact-Checker Nails ‘Unique’ Aspect Of Donald Trump’s Latest Lies

Also on HuffPost

Love HuffPost? Become a founding member of HuffPost Plus today.

This article originally appeared on HuffPost.