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The "Outnumbered" panel sounded off on former Secretary of State John Kerry Monday over the "shadow diplomacy" in which he is reportedly engaging to try saving the 2015 Iran nuclear deal.

Kerry is under fire over the new report, which claims he sat down twice in recent months with Iranian Foreign Minister Javad Zarif to strategize on saving the deal.

"It's absolutely breathtaking," said Fox News contributor Charlie Hurt.

"It makes him the Jane Fonda of the Middle East," Kennedy added, referencing the actress who organized a campaign to mobilize anti-war pressure during the Vietnam War.

"I'm not even kidding about that," she said. "There's something about that that's so unethical and underhanded."

President Trump weighed in as well Monday, saying that the Iran nuclear deal was "very badly negotiated."

The president, who has repeatedly expressed a desire to exit the agreement, has a deadline of May 12 to either withdraw from the deal or renew it.

In a speech to the NRA on Friday, Trump blasted the Obama administration for entering into a deal with a country where people chant "Death to America."

The leaders of Germany and France, in recent visits to the White House, lobbied Trump not to withdraw.

Kerry's spokesperson said Monday, "I think every American would want every voice possible urging Iran to remain in compliance with the nuclear agreement that prevented a war."

Watch more above.

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