Image copyright IS video 
 
 Islamic State militants have released a video, featuring a man and young boy speaking with British accents, purportedly showing the killing of five men who it says were spying for the UK. In a video released on social media the masked gunman warned David Cameron that the West could never win in the war against Islamic State in Iraq and the Levant (Isil), while mocking the impact of RAF airstrikes . Mohamed Emwazi, dubbed Jihadi John, was killed in a drone strike in November 
 
 Jihadi John, who was later identified as 27-year-old Mohamed Emwazi from London, was killed in a US drone strike last November. “But this is an organization that’s losing territory, it’s losing ground, it’s, I think, increasingly losing anybody’s sympathy, and this again shows what an appalling organization we’re up against.” 
 
 Britain's Foreign Office said it is aware of the video and is examining its content. The five men, wearing jumpsuits, are seen purportedly being shot in the back of the head in a desert location, after making what is claimed to be their confessions. In the footage released online Sunday, a masked man with a British accent calls British Prime Minister David Cameron a "slave of the White House," and "mule of the Jews." Only an imbecile would dare to wage war against a land where the law of Allah reigns supreme and where the people live under the justice and security of Sharia. British Prime Minister David Cameron said: “It’s desperate stuff from an organization that really does do the most utterly despicable and ghastly acts and people can see that again today. All people of Britain, know that today your citizenship is under out feet and that the Islamic State, our country, is here to stay and we will continue to wage jihad, break borders and one day invade your land, when you will be ruled by Sharia. Wearing a camouflage top and a black Isil headband the youngster appeared to speak with a British accent as he pointed to the distance and said: “We will kill the kuffar (non-believers) over there" as he points to the distance.” 
 
 While his accent was difficult to ascertain the decision to use the child in the video suggested a determination by the Isil propaganda machine to further shock and terrorise the West.
– An airstrike killed the Islamic State's "Jihadi John" last year, but a new ISIS spokesman with a British accent appears to have taken his place. The group released a video in which the masked man warns that ISIS will attack the UK in retaliation for Britain's support of the US-led coalition that's bombing Syria, reports USA Today. The video also purports to show five men from Syria and Libya, alleged spies for Britain, being executed with a gunshot to the head, reports the BBC. The Telegraph labels the militant the "new Jihadi John" in its headline and notes that the video has another "chilling twist": a young boy clad in military clothes warns in what sounds like a British accent that ISIS is going to kill non-Muslims. The video hasn't been authenticated yet. "Only an imbecile would dare to wage war against a land where the law of Allah reigns supreme," says the adult militant, addressing David Cameron. "The Islamic State, our country, is here to stay. And we will continue to wage jihad, break borders, and one day invade your land, where we will rule by the Shariah." He also calls Cameron a "slave of the White House" and a "mule of the Jews."