Washington Post: Sanders briefed by U.S. officials on Russian efforts to help his campaign, U.S. officials tell Sanders Russia is interfering in his campaign, Nevada caucus volunteers given confidentiality agreements

From The Situation Room with Wolf Blitzer and Pamela Brown CNN Podcasts

Washington Post: Sanders briefed by U.S. officials on Russian efforts to help his campaign, Sanders: some "ugly stuff" on the internet may not be coming from "real supporters", U.S. officials tell Sanders Russia is interfering in his campaign, Nevada caucus volunteers given confidentiality agreementsTo learn more about how CNN protects listener privacy, visit cnn.com/privacy Learn more about your ad choices. Visit podcastchoices.com/adchoices