Petro Kotin, the head of Ukraine’s nuclear agency, sent an urgent warning about the intense shelling near the power plant, saying it is "one step away from a radiation emergency." WATCH FULL EPISODES OF WORLD NEWS TONIGHT: https://abc.com/shows/world-news-tonight WATCH WORLD NEWS TONIGHT ON HULU: https://bit.ly/3iQLwPp #worldnewstonight #ukraine #russia #nuclearplant #warinukraine