When Izium was liberated from Russian forces, Ukrainian fighters say they discovered a mass grave nearby. Zelenskyy says Russia has committed many war crimes throughout this war. WATCH the ABC News Live Stream Here: https://www.youtube.com/watch?v=w_Ma8oQLmSM SUBSCRIBE to ABC NEWS: https://bit.ly/2vZb6yP Watch More on http://abcnews.go.com/ LIKE ABC News on FACEBOOK https://www.facebook.com/abcnews FOLLOW ABC News on TWITTER: https://twitter.com/abc #abcnews #abcnlupdate #ukraine #russia #ukrainewar #war