VIDEO : Jake Tapper Fires Back At Bill O'Reilly In Brutal Tweet

Scott Eisen/Getty Images CNN anchor Jake Tapper offered a blunt retort to former Fox News host Bill O'Reilly. The back-and-forth started with a ratings jab from O'Reilly. In a tweet, O'Reilly praised Fox News anchor Sean Hannity's ratings, while comparing them to ratings on CNN anchor Jake Tapper's midday show. Tapper shot back, alluding to O'Reilly's departure from Fox News earlier this year amid an advertising boycott over revelations of settlements he made with various women and other allegations of sexual harassment.