In a late night speech on Thursday, Ukrainian President Volodymyr Zelenskiy vowed to stay in Kyiv as his troops battled Russian invaders who are advancing toward the capital in the biggest attack on a European state since World War Two. #UkraineCrisis #Russia #VolodymyrZelenskiy #VladimirPutin #News #Reuters Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en