The authenticity of the video or the claims in it could not immediately be confirmed and there was no comment from Russia's Foreign Ministry or its FSB security service. Story highlights ISIS releases a video showing the beheading of a man it says was a Russian spy 
 
 The captive's killer tells Russians, " We will kill your sons ... for each son you killed here" 
 
 (CNN) ISIS released video Wednesday showing the beheading of a man it claims joined the terrorist group but was in fact a Russian spy, as well as a message chastising Russian President Vladimir Putin and threatening his country's citizens. He said there's been some shift in Russian tactics lately but the "vast majority of their sorties" are targeting moderate groups, not Islamic State extremists.
– ISIS released a video Wednesday it claims shows a Russian jihadist beheading a Russian spy, NBC News reports. In the video—titled "You Shall be Disappointed and Humiliated O Russians"—the victim identifies himself as Magomed Khasiyev from the Chechen Republic. According to Arutz Sheva, the 23-year-old admits in the video to spying on ISIS to give the Russian government information on the more than 600 Russian citizens who have joined the terrorist organization. In the video, Khasiyev claims he was pressured into working for the Russian Foreign Ministry's security service, the AP reports. The beheading appears to be in retaliation for Russia's bombing campaign in Syria. NBC reports the executioner says in the video—while speaking Russian—that airstrikes "have done nothing but kill peaceful Muslims." He goes on to threaten both Putin and Russian citizens with further attacks, according to Arutz Sheva. "You will not find peace in your homes," CNN quotes the executioner in the video. "We will kill your sons … for each son you killed here. And we will destroy your homes for each home you destroyed here." The video has not been authenticated, nor has there been any confirmation the victim was actually a spy.