US President Donald Trump has been embroiled in the Russiagate scandal with American media over the last two years amid allegations of collusion with the Russian government during the 2016 presidential elections, with the head of state calling some reporters the "enemy of the people" and slamming news outlets as "fake news", including CNN.
But US attorney general William Barr's summary on the Mueller investigation, which was released on Sunday and found that President Trump had not colluded with Russia, shattered the mainstream media's official narrative.
Responding to Mr. Barr's summary, Mr. Zucker wrote in an email to the New York Times that he was "entirely comfortable" with how CNN covered the investigation.
"We are not investigators," Zucker said in the NYT article. "We are journalists, and our role is to report the facts as we know them, which is exactly what we did."
"A sitting president's own Justice Department investigated his campaign for collusion with a hostile nation. That's not enormous because the media says so. That's enormous because it's unprecedented," Mr. Zucker added.
The CNN tsar was immediately trolled on Twitter following his comments by both famous and lesser-known personalities.