ISIS claims responsibility for Moscow concert hall attack

ISIS has claimed responsibility for an attack on a Moscow-area concert hall that killed dozens of people and injured more than 100. #Moscow #Russia #News Watch The National live on YouTube Sunday-Friday at 9 p.m. ET Subscribe to The National: More from CBC News | The National is the flagship of CBC News, showcasing award-winning journalism from across Canada and around the world. Led by Chief Correspondent Adrienne Arsenault and Ian Hanomansing, our team of trusted reporters helps you make sense of the world, wherever you are.