World News Roundup: 04/18

The desperate fight for the Ukrainian port city of Mariupol. Fending off a Russian cyber attack. Searching for the gunman who attacked a Pittsburgh party. CBS News Correspondent Deborah Rodriguez has today's World News Roundup. To learn more about listener data and our privacy practices visit: https://www.audacyinc.com/privacy-policy Learn more about your ad choices. Visit https://podcastchoices.com/adchoices