President Trump’s decision to pull out of the Paris climate agreement was highly controversial on Thursday, with Democrats and even some Republicans opposing the move. MSNBC, anxious to bring on a level headed dissenter from Trump’s decision, brought Donny Deutsch onto Nicolle Wallace’s Deadline: White House.

Deutsch, wasting no time in casting aspersions at his political opponents, articulately described Trump as a “dangerous little man”. Such words of eloquent contempt were not enough for Mr. Deutsch, who proceeded to call the President a “backward” and “uneducated man”:

I don't think Donald Trump understands these CEOs are think about their global companies. They're not saying, what is best for -- he is such a backward man. He's such an uneducated man.

Deutsch, valiantly refusing to stray from DNC talking points, reminded Wallace of the obvious opportunity for the Trump campaign to deflect from the Russia narrative. To her credit, Wallace was steadfast in proving MSNBC’s blind partisanship:

DEUTSCH: Had he gone any other direction, and by block three we'd be back to Russia. NICOLLE WALLACE: Let me-- We're actually getting back to Russia in block two.

Matt Schlapp of the American Conservative Union was invited to provide support for the leaving the accord, and he proceeded to give a solid, sober conservative response on the matter. Wallace then asked Schlapp more broadly if he believed in climate change, and he responded this way:

I believe that the climate fluctuates, absolutely, and sometimes we go through periods of time when it gets warmer and sometimes we go through periods of time when it gets colder. I do not believe that these carbon caps, and taxing carbon and constraining carbon will result in much difference on the temperature gauge and I think every scientific study shows it. All of these -- all of these goals, if you actually look at the impact on the temperature, they are so slight and why are we shedding our jobs for tiny, tiny possible improvements in the temperature?

Schlapp’s cautious skepticism was too much for Deutsch, supposedly armed with years of experience as a climate scientist (he's not), who pontificated on humanity’s certain doom:

DEUTSCH: Matt, first of all -- I'm sorry-- SCHLAPP: Please. DEUTSCH: Even tiny improvements, if we go 3.6% warmer, the world ends.

The two exchanged rounds of verbal sparring that ended, fittingly, with a full-on devolution into a schoolyard brawl:

SCHLAPP: That's not true. DEUTSCH: That is true. SCHLAPP: That is not true. DEUTSCH: Every scientific-- Matt, and, by the way -- SCHLAPP: Donny, you sound like a crazy Christian preacher saying the End is near. DEUTSCH: No, you sound like a crazy Trump advocate who that just drinks whatever he sells. And that's what you sound like, sir.

After the rigorous scholasticism embodied in the passionate/pathetic interchange, the rest of the segment seemed awash with normalcy, as Schlapp went back to bread and butter conservatism while Deutsch claimed that those who disagree with him on health care policy want “20 million people” to die. It's tough to say which modus operandi is preferable.

Read the full June 1 transcript below: