Exactly one year ago, Russia invaded Ukraine. In this video, we examine how the horrors of war have changed the country and the world. One thing, however, has stayed the same - Ukraine remains resilient and continues to fight for the right to retain and develop its democracy. But why does it matter for the rest of the world? Timothy Snyder, historian and leading analyst of the Ukraine war, believes there are three trends that we have to know about to understand why Ukraine keeps fighting. Watch the full interview with Prof. Timothy Snyder.