Armed attackers open fire inside concert hall in Russia, Russian state… CNN 0 82 03.23 04:33 https://www.youtube.com/watch?v=G778YpbbY0o + 9 https://www.youtube.com/feeds/videos.xml?channel_id=UCupvZG-5ko_eiXAup… + 11 Armed attackers open fire inside concert hall in Russia, Russian state media reports