Mueller's investigation arose in part from the findings of US intelligence agencies that Russian Federation had meddled in the 2016 USA election and that its goals eventually included aiding Trump who won a surprise victory over Democrat Hillary Clinton.
George Nader, a Lebanese American business who helped organize and attended the Seychelles meeting, has testified on the matter before a grand jury gathering evidence about discussions between the Trump transition team and emissaries of the Kremlin, as part of Mueller's investigation into Russian efforts to interfere with the 2016 election.
"They didn't care this guy was literally melting down on national television", Hannity charged, "because they were using him as a tool to attack the Trump administration".
In the light of Nunberg's 180 flip, he said that the media treated him fairly, that he would comply with Mueller's email inquisition, and even offered an apology to Sarah Huckabee Sanders who he completely trashed.
In another of Nunberg's appearances, CNN host Erin Burnett said she thought Nunberg had liquor on his breath.
On Tuesday, Nunberg told The Washington Post he had made a decision to cooperate with the special counsel after receiving free legal advice on the air from MSNBC commentator and attorney Maya Wiley.More news: 10 years after financial crisis, Senate prepares to roll back banking rules
Most analysts agreed that the damage may have already been done.
Nunberg expressed concern Monday that his lawyer, Patrick Brackley, would "dump" him for giving public statements amid the Mueller probe.
Andrew Wright, a professor at Savannah Law School and the former associate White House counsel under President Barack Obama, said it was "hard to watch the spectacle".
Nunberg, a former Trump advisor, blew up the political landscape after what was possibly an alcohol-infused binge-appearance session across multiple media platforms Monday night.
"The president very well might not have done anything", Mr. Nunberg said on Tuesday about the possibility of Russian collusion.
It was a reversal from his tone throughout the day, when he lashed out at Trump and his campaign and threatened to defy Mueller in a series of interviews.
"Unsourced innuendo like this succeeds only because the leakers know the Special Counsel will not respond to set the record straight", Cohen's attorney, Stephen Ryan, told The Post in a statement. Stone, meanwhile, attracted renewed scrutiny when it emerged last week that he was in direct communication with the radical pro-transparency group WikiLeaks weeks before the 2016 election.