TerrorismRussian FederationRussia mourns as concert attack suspects appear in court01:43This browser does not support the video element.TerrorismRussian FederationClifford Coonan03/25/2024March 25, 2024Four men accused of carrying out the attack in a concert hall outside Moscow that killed at least 137 people have appeared in court. The Kremlin has linked the assault to Ukraine, without providing evidence.Copy linkAdvertisement