Russian-speaking jihadist threatens Moscow over airstrikes; victim 'admits' to being a 'spy' sent to gather intel on foreign nationals. 
 
 Islamic State (ISIS) released a new scare video Wednesday, this time targeting the Russians. 
 
 The video, entitled "You Shall be Disappointed and Humiliated O Russians," shows the beheading of an alleged Chechen spy - a 23 year-old who admits on camera to passing along information to Moscow from Syria and Iraq about the 605 Russian citizens who left to join the jihadists. 
 
 The "spy" added that the Russians are having difficulty keeping track of the foreign nationals, due to the common practice of changing names upon joining the organization. 
 
 The terrorist speaks in Russian before decapitating his victim, stating, "[Russian President Vladimir] Putin, you dog, we attacked [Syrian President Bashar] Assad prior to your arrival as well as the Americans and their allies - we will also attack you." 
 
 Russia began airstrikes on ISIS in Syria in late September. 
 
 The film was shot in the ISIS "capital" of Raqqa, Syria. ||||| LONDON -- A video released Tuesday by the Islamic State of Iraq and Syria (ISIS) shows the apparent execution of two men, accused of being spies for Russia, at the hands of a young boy. 
 
 The seven-and-a-half-minute long video was released by ISIS' multi-lingual production wing, al-Hayat, and begins with long television news-style interviews with both men, who confess to being spies against ISIS and working in both Syria and Turkey. 
 
 The men, who speak Russian in the interviews, are identified by name as agents of Russia's premier spy agency, the FSB. One of them tells the interviewer he was under orders to try and assassinate an ISIS leader, but the name of the ISIS figure in question is edited out of the video. 
 
 After what appears to be a scripted warning to others "who want to come here and spy" to "repent to Allah now before it's too late," the setting in the video changes to an outdoor location where the men are seen kneeling with their backs to a bearded militant whom CBS News could not identify and a boy, who appeared to be less than 15 years old. 
 
 Both the adult jihadist and the boy appear to be of Asian descent. The man recites Quranic verse before saying: "Allah has gifted the Islamic State's security agency with the apprehension of these two spies." 
 
 He says the men are "now in the custody of the lion cubs of Khilafah," before prompting the boy to go ahead with the apparent execution with a pat on the shoulder. 
 
 The video, which is heavily edited and includes English subtitles throughout, then appears to show the boy shoot both men in the back of the head. 
 
 No blood can be seen on the bodies in the final shots of the purported execution sequence, and the video then transitions to a clip from an older video, released in Nov. 2014, in which the same boy is seen expressing aspirations to one day become a "mujahid." 
 
 The older video shows the boy with other purported newcomers to ISIS territory, including many women and other children. The November video includes images from an ISIS religious school, where kids as young as six or seven are seen being groomed to become future militants for the group. 
 
 CBS News cannot independently verify the authenticity of the video released by ISIS, nor the identity of the men seen in it. CBS News was seeking comment from officials in Moscow. 
 
 In the meantime, Russian news agency RIA Novosti said a representative of the FSB told them it "does not comment on the publication of the video executions allegedly of their agents by the members of the 'Islamic state.'" 
 
 ISIS has executed scores of people in territory seized on both sides of the Iraq-Syria border, including American and European journalists and aid workers, rival militia members and soldiers from both nations' armies. ||||| 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. 
 
 As the captive kneels before him in an orange jumpsuit, his killer says in Russian that the airstrikes ordered by Putin against the Islamist extremist group has "made us understand that we are doing right thing" by continuing their fight. 
 
 He then addresses the Russian people, saying, "You will not find peace in your homes. We will kill your sons ... for each son you killed here. And we will destroy your homes for each home you destroyed here." 
 
 Photos: Aid workers, journalists, pilots -- a look at ISIS' high profile hostage victims Photos: Aid workers, journalists, pilots -- a look at ISIS' high profile hostage victims The first U.S. citizen to be killed by ISIS, James Foley was taken hostage in Syria in November 2012 and beheaded in August 2014. The 40-year old from Rochester, New Hampshire was an experienced war journalist who contributed videos to major media outlets including Agence France-Presse and GlobalPost. Hide Caption 1 of 10 Photos: Aid workers, journalists, pilots -- a look at ISIS' high profile hostage victims Also a freelance journalist, Steven Sotloff disappeared during a reporting trip in Syria in August 2013 and was beheaded a year later. The U.S.-Israeli citizen, who wrote for publications like Time, Foreign Policy and Christian Science Monitor, was when he died. Hide Caption 2 of 10 Photos: Aid workers, journalists, pilots -- a look at ISIS' high profile hostage victims British national David Haines was abducted in March 2013 while working at a Syrian refugee camp for an aid group and executed a year later. The 44-year-old father of two had more than a decade of experience doing aid work providing logistics to Handicap International and as an unarmed peacekeeper with Nonviolent Peaceforce. Hide Caption 3 of 10 Photos: Aid workers, journalists, pilots -- a look at ISIS' high profile hostage victims Originally a taxi driver from the UK, Alan Henning was volunteering to deliver food and water to people affected by the Syrian civil war. He traveled to the Middle East in December 2013, was taken hostage on Boxing Day and held for more than a year before being killed. Hide Caption 4 of 10 Photos: Aid workers, journalists, pilots -- a look at ISIS' high profile hostage victims Peter Kassig , who served briefly as a U.S. Army Ranger, was working as a humanitarian worker in Syria when he was kidnapped on October 1, 2013 en route to deliver food and medical supplies. The 26-year old was confirmed dead after ISIS posted a video on November 16, 2014. Hide Caption 5 of 10 Photos: Aid workers, journalists, pilots -- a look at ISIS' high profile hostage victims Haruna Yukawa was a 42-year-old Japanese national who aspired to become a security contractor to Japanese companies in conflict zones. He was in the hands of ISIS for several months before a video released in January showed his killing. Hide Caption 6 of 10 Photos: Aid workers, journalists, pilots -- a look at ISIS' high profile hostage victims A freelance journalist, 47-year-old Kenji Goto worked in Syria and other war-torn countries for numerous outlets including Japan's public broadcaster NHK. Goto was in Japan when news surfaced about the capture of Haruna Yukawa, who he had befriended while working in the region. Goto returned to Syria hoping to negotiate his release but was himself captured and later executed. Hide Caption 7 of 10 Photos: Aid workers, journalists, pilots -- a look at ISIS' high profile hostage victims Royal Jordanian Air Force pilot Moath al-Kasasbeh went missing when his plane crashed during a December 2014 mission. A devout Muslim who memorized the Quran, the 27-year old was shown in an ISIS video in February where he was brutally burned alive. Hide Caption 8 of 10 Photos: Aid workers, journalists, pilots -- a look at ISIS' high profile hostage victims Kayla Mueller, was a 26-year-old humanitarian worker from Prescott, Arizona, who was taken hostage in August 2013 in Syria. Although the circumstances of her death are unclear, it was confirmed in February when ISIS sent a private message to her family. U.S. government officials later revealed that she had been tortured and sexually abused by ISIS' top leader Abu Bakr al Baghdadi during her captivity. Hide Caption 9 of 10 Photos: Aid workers, journalists, pilots -- a look at ISIS' high profile hostage victims Croatian national Tomislav Salopek was a topographer who was kidnapped in July while driving to work in Egypt, the Croatian foreign ministry said. In August, ISIS released a video showing his apparent beheading. The same month the group posted another video, showing the decapitated head and body of antiquities expert Khaled al-Asaad . The 82-year old, who dedicated his life to preserving cultural relics, was killed for not revealing the location of ancient treasures. Hide Caption 10 of 10 
 
 CNN could not immediately verify the authenticity of the video, much less the ISIS claim that the man beheaded was a Russian spy. CNN also was unable to immediately obtain a comment from the Russian government about whether it believes the video shows a Russian citizen being killed. 
 
 But if the video is authentic, it joins a growing catalog of atrocities in which the terror group has broadcast the killing of one or more captives and paired it with menacing messages. 
 
 Read More
– 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.