A Ukrainian marine holed up inside Mariupol’s steelworks has told Sky News that they are outnumbered 10 to one by the Russians.Major Serhiy Volyna, who has taken on the role of spokesman for his unit, said conditions inside the Azovstal steel plant are dire but he insisted spirits remained high.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/@skynewsFor more content go to http://news.sky.com and download our apps: Apple: https://itunes.apple.com/gb/app/sky-n… Android https://play.google.com/store/apps/de… Sky News videos are now available in Spanish here/Los video de Sky News están disponibles en español aquí https://www.youtube.com/channel/skyne…Sky News videos are also available in German here/Hier können Sie außerdem Sky News-Videos auf Deutsch finden: https://www.youtube.com/channel/UCHYg…To enquire about licensing Sky News content, you can find more information here: https://news.sky.com/info/library-sales