The late-night host repeatedly questioned Bolton’s apparent lack of foresight.

“You had to know that that was a whirlpool of chaos in there.

Even those of us looking in from the inside who never got to go in could see that.

Why did you go in knowing how chaotic it was?”

Even as Colbert asked about the claims in the book, theLate Showhost would sprinkle in commentary.

As the questioning went on, Colbert laid in a bit further.

Colbert exclaimed, echoing Bolton’s own statements from earlier.

“Hes a person willing to sell out the interests of the American people for his own reelection.

He won’t be voting for Biden, either.

He’s incredibly readable.

That’s why when he ran casinos, the house lost.

There’s nothing to learn about him.

That’s why he’s essentially a boring person.

How did you not know beforehand that he was just callow?”

“But you’re an international negotiator!”

“How could you be naive?

Youve dealt with with the worst people in the world.”

“Youve really insulted me now by calling me naive, replied Bolton, remaining calm.

Look, I thought it was possible to work with somebody.

And as I detail in the book, that turned out not to be true.

Watch the full interview above.

Watch EW’s new daily series,Last Night’s Late Night, every morning on Quibi.