I think it's the sign of a leader to step up and say, you know, when something's not working to have the guts to reverse it. And the worst thing you can do is to let that mistake linger.

He also previously served as an Executive in Residence at Columbia Business School and the former CEO of NBC.

He also previously served as an Executive in Residence at Columbia Business School and the former CEO of NBC. In November 2012 Zucker was picked to take over as the President of CNN Worldwide in January 2013.