"I do worry that with the nuclear codes Trump would end civilization as we know it,”

In a scathing interview Monday with Good Morning America, Tony Schwartz, who co-wrote Trump’s 1987 business best-seller Art of the Deal, blasted the real estate mogul as an attention-deficient man with “sociopathic tendencies” who is a potential danger to civilization.

Schwartz said that among the myths he regrettably helped perpetuate about Trump is the idea that the businessman has a high level of intelligence and savvy.

“I believe he is so insecure, so easily provoked, and not ― not particularly nearly as smart as people might imagine he is. And in the face of someone like Putin provoking him cleverly. ... I do worry that with the nuclear codes [Trump] would end civilization as we know it,” Schwartz told GMA’s George Stephanopoulos.

Schwartz’s harsh rebuke of Trump follows an explosive interview with The New Yorker in which he said “I put lipstick on a pig,” and added that if he were to write the book today, he would call it “The Sociopath.”