Four men have been charged in connection with one of the deadliest terror attacks in Russia’s history where more than 130 people were killed during an ambush at a crowded concert hall in Moscow. Isis has claimed responsibility, but Vladimir Putin has tried to tie Ukraine to the attack. NBC’s Matt Bradley reports for TODAY. » Subscribe to TODAY: https://www.youtube.com/@TODAY About: TODAY brings you the latest headlines and expert tips on money, health and parenting. We wake up every morning to give you and your family all you need to start your day. If it matters to you, it matters to us. We are in the people business. Subscribe to our channel for exclusive TODAY archival footage & our original web series. Connect with TODAY Online! Visit TODAY's Website: https://www.today.com/ Find TODAY on Facebook: https://www.facebook.com/today Follow TODAY on Twitter: https://twitter.com/TODAYshow Follow TODAY on Instagram: https://www.instagram.com/todayshow/ » Stream TODAY All Day: https://www.today.com/allday About: TODAY All Day is a 24/7 streaming channel bringing you the top stories in news and pop culture, celebrity interviews, cooking, and more. All in one place. #moscow #russia #worldnews