The black hooded jihadist who likes to preach hatred in a London accent and wave his knife at the camera before he cuts off the heads of high-profile Western and Japanese hostages has been identified. The BBC and the Washington Post are reporting that he's Mohammed Emwazi, a 26 year old Kuwaiti born immigrant (he arrived with his family at the age of 6) who formerly lived in a middle class neighborhood in west London and graduated from Westminster University. http://www.bbc.co.uk/news/uk-31637090 http://www.reuters.com/article/2015/02/26/us-mideast-crisis-britain-jihadijohn-idUSKBN0LU13Y20150226 Reportedly he's been on the British Security Service's (MI-5) radar for years. In 2009 he traveled with several associates to Tanzania, hoping to get to Somalia in order to join Al-Shabab. The British had the Tanzanians detain and question him, after which he was put on a plane back to Europe. He insisted at the time that he was going on safari. Some jihadist advocacy group in London is insisting that the British authorities also prevented him from traveling to Kuwait where he was supposed to get married. (Evidently an arranged marriage.) The activists are insisting that his treatment at the hands of the authorities is what radicalized him. (I'd say that given subsequent events, the authorities didn't do enough.) He seems that he slipped away to Syria in 2012, where he became a key ISIS asset. Interestingly, he comes from a fairly well-to-do family, attended a British taxpayer-funded university and always seems to have had enough money to jump on jets and travel internationally. He's not a stereotypical product of deprivation. (He's certain depraved, that's for sure.) So much for the naive "root causes" rhetoric.