New Islamic State videos back claim it carried out Moscow concert hall attack

Footage of gunmen reinforces terror group's claim to have masterminded worst terror attack on Russia in two decades Moscow attack - latest updates Islamic State has released new videos of the attack on the Crocus City concert hall outside Moscow that left 133 people dead, corroborating the terror group's claim to have masterminded the slaughter even as Russia has sought to place the blame on Ukraine, which Kyiv denies. The Moscow terrorist shooting is the deadliest IS-claimed attack to date on E...