Alan Dershowitz reacted Tuesday on America's Newsroom to Lanny Davis walking back multiple assertions he made regarding Michael Cohen and the Trump-Russia investigation.

Davis, Cohen's attorney, apologized for claiming in July that Cohen, the president's former attorney, could tell Special Counsel Robert Mueller that President Trump had prior knowledge of the 2016 Trump Tower meeting.

He told BuzzFeed News that he "made a mistake" in being a source in the CNN story that reported Cohen claimed the president knew of that meeting in advance.

Davis also said on the network last week that the story's reporting "got mixed up" and that he was not the source.

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Dershowitz, a Harvard law professor emeritus, said Cohen may have embellished his claims regarding the Trump Tower meeting in order to get a more favorable plea deal.

"This is the problem that happens when you have a flipped witness who has an incentive not only to sing, but also to compose," he told Sandra Smith.

Cohen admitted to violating federal campaign finance laws in 2016 by arranging hush money payments to adult film star Stormy Daniels and former Playboy model Karen McDougal “at the direction” of then-candidate Trump.

"There's probably a dynamic going on between the client and the lawyer that we'll never know about, but these kinds of things happen," Dershowitz said.

Earlier on America's Newsroom, MediaBuzz host Howard Kurtz said that he spoke with Davis on the phone, who said he regrets the mistake he made.

He noted how Davis is also backtracking on a claim that Trump had prior knowledge about the hacking of the DNC email server.

"He said he was describing his beliefs but has no hard evidence," Kurtz said. "That is something, as he now recognizes, he should not have done."

Watch more of Dershowtiz's interview above, and hear Kurtz's comments below.

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