After today's invasion, we've seen lots of people asking how Ukraine became the front-line of tensions between Russia and the West. Here’s 3 mins on how it happened – from the 90s to this week. Produced by Michael Cox, Priyanka, Deladia, Catherine Karelli https://t.co/BKGrSNRAzh pic.twitter.com/DPBnp5zvJ3

— Ros Atkins (@BBCRosAtkins) February 24, 2022