The Kremlin’s security services were aware of an ISIS threat days before a deadly attack on a concert hall near Moscow, Russian intelligence documents obtained by a UK-based investigative organization suggest. According to the London-based Dossier Center, the documents showed ethnic Tajiks radicalized by ISIS-K – the Central Asian offshoot of the terror group ISIS – could have been involved. At least 143 people were killed last Friday in the deadliest attack on Russia in decades, when assailants stormed Crocus City Hall with guns and incendiary devices, just before a concert was to be held. ISIS has claimed responsibility for the attack with statements, photos, and a propaganda video filmed by the attackers. The Dossier Center is a Russian investigation group backed by Mikhail Khodorkovsky, an exiled former Russian oil tycoon turned Kremlin critic. It has previously unearthed details about Russian President Vladimir Putin and his regime, often using documents and leaks from inside the Russian government. “A few…
