Mstyslav Chernov has told Sky's Kay Burley his Oscar nomination for his film '20 Days in Mariupol’ is "bittersweet", but "people kept telling me you have to film this". The documentary chronicles the besieged Ukrainian city and the journalists who remained there after Russia invaded. #ukraine #mariupol #oscars Latest Ukraine war updates: https://news.sky.com/story/ukraine-war-latest-military-plane-crashes-in-russia-scores-on-board-reports-say-12541713 SUBSCRIBE to our YouTube channel for more videos: null 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