Donald Trump Jr. created a firestorm Wednesday when he tweeted out the possible identity of the whistleblower who complained about his father's infamous Ukraine phone call. Trump Jr. joins the Rundown to defend his controversial tweet, blast the impeachment inquiry the whistleblower inspired and discuss his new book, Triggered: How the Left Thrives on Hate and Wants to Silence Us

President Trump is calling for a war on the Mexican drug cartels following the massacre of nine people from a Mormon community during a trip near the US-Mexico border earlier this week. Robert Charles, former Assistant Secretary of State for President George W. Bush weighs in on the recent tragedy and discusses what the US and Mexican governments should do to help end the record violence in Mexico

Plus, commentary by Co-host of "The Five" Juan Williams.