Robert Mueller served as FBI director from 2001 to 2013 and led the investigation into allegations of Russian meddling in the 2016 presidential election.
This week's guests include U.S. Representative to the United Nations Mike Waltz, Democratic Rep. Jason Crow and International Atomic Energy Agency Director-General Rafael Grossi.
The Iran war reached the three-week mark as about 2,200 more U.S. Marines and three more warships are headed toward the region, two U.S. officials said.
The western United States experienced a severe snow drought this year, threatening the region's water supply and potentially setting the stage for its wildfire season.
