Sources tell CBS News the U.S. has been tracking Russia's development of a nuclear-capable anti-satellite weapon in space. Dr. Francesca Giovannini, executive director of the Harvard Belfer Center's Project on Managing the Atom, joins CBS News to discuss how the weapon could work in practice. CBS News Streaming Network is the premier 24/7 anchored streaming news service from CBS News and Stations, available free to everyone with access to the Internet. The CBS News Streaming Network is your destination for breaking news, live events and original reporting locally, nationally and around the globe. Launched in November 2014 as CBSN, the CBS News Streaming Network is available live in 91 countries and on 30 digital platforms and apps, as well as on CBSNews.com and Paramount+. See more at https://cbsnews.com/prime-time-with-john-dickerson/ Subscribe to the CBS News YouTube channel: https://youtube.com/cbsnews Watch CBS News: https://cbsnews.com/live/ Download the CBS News app: https://cbsnews.com/mobile/ Follow CBS News on Instagram: https://instagram.com/cbsnews/ Like CBS News on Facebook: https://facebook.com/cbsnews Follow CBS News on Twitter: https://twitter.com/cbsnews Subscribe to our newsletters: https://cbsnews.com/newsletters/ Try Paramount+ free: https://paramountplus.com/home/?ftag=PPM-05-10aeh8h For video licensing inquiries, contact: [email protected]