The Liberal Democrats have asked the government to investigate whether Russia was behind a cyber attack that has hit several European airports. Heathrow, Berlin and Brussels were among those affected by the software issue, which impacted electronic check-ins and left staff having to check in passengers by hand. It is not clear who was behind the attack. Live updates: https://news.sky.com/story/cyber-attack-disrupts-european-airports-as-heathrow-hit-by-delays-13434463 #cyberattack #heathrow #nato #russia 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/ To enquire about licensing Sky News content, you can find more information here: https://news.sky.com/info/library-sales