Wednesday, September 18, 2019: Trump Slaps Sanctions on Iran as Pompeo Arrives in Saudi Arabia

President Trump announces new sanctions on Iran and his pick for a new National Security Adviser. This as Secretary of State Pompeo arrives in Saudi Arabia -- and the Saudis display what they say are Iranian weapons used to attack the kingdom's oil facilities. Plus, Joe Biden still leads the Democratic pack. But the first national poll after the latest debate shows Elizabeth Warren closing in -- and outpacing all her rivals when it comes to voter enthusiasm. And new wrinkles in the House Democratic family feud over impeachment. This as Trump confidante Corey Lewandowski tells Congress there is nothing wrong with lying -- and then gets schooled on CNN. On today's panel: Vivian Salama with The Wall Street Journal , Paul Kane with The Washington Post, CNN's Kylie Atwood, Julie Hirschfeld Davis with The New York Times, and Tarini Parti with The Wall Street Journal Also on the program: CNN's Oren Liebermann, Clarissa Ward, and Douglas Brinkley

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