Why Russian troops are massing near Ukraine's 'fortress city'

As the war continues in Ukraine, Sky's defence and security analyst, professor Michael Clarke, discusses why Russian forces are gathering across the border and how the second day of an extended prisoner exchange unfolded. Read the latest: https://news.sky.com/story/kharkiv-why-russian-troops-are-massing-near-ukraines-fortress-city-13373348 #ukrainewar #russia #russiaukrainewar SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.com/skynews Follow us on Twitter: https://twitter.com/skynews Like us on Facebook: https://www.facebook.com/skynews Follow us on Instagram: https://www.instagram.com/skynews Follow us on TikTok: https://www.tiktok.com/@skynews For more content go to http://news.sky.com and download our apps: Apple https://itunes.apple.com/gb/app/sky-news/id316391924?mt=8 Android https://play.google.com/store/apps/details?id=com.bskyb.skynews.android&hl=en_GB Sky News Daily podcast is available for free here: https://podfollow.com/skynewsdaily/ Sky News videos are now available in Spanish here/Los video de Sky News están disponibles en español aquí: https://www.youtube.com/channel/UCzG5BnqHO8oNlrPDW9CYJog To enquire about licensing Sky News content, you can find more information here: https://news.sky.com/info/library-sales