Inside Impeachment: All eyes on Gordon Sondland

This week on “Inside Impeachment,” Yahoo News Chief Investigative Correspondent Michael Isikoff previews what may be the final week of public testimony in the House of Representatives’ impeachment inquiry into President Trump. While there will be eight witnesses total, all eyes appear to be on Gordon Sondland, the U.S. ambassador to the European Union who has already had to revise his earlier testimony. What other surprises may be in store?