John Dickerson, co-anchor of “CBS Evening News,” said Monday he will exit the network at the end of the year. Dickerson will be the first major talent departure since the arrival of Bari Weiss as editor in chief of CBS News last month.

John Dickerson is leaving CBS News at the end of the year as Bari Weiss takes over as the new editor-in-chief. Dickerson has been with the network since 2009 and, in January of this year, began co-anchoring the CBS Evening News alongside Maurice DuBois.

When the torrent of almost-true information -- by man or machine -- becomes inescapable, trust collapses. "CBS Evening News" co-anchor John Dickerson explains.