So the security services have discovered the name of the executioner and he’s a Brit. Big deal! There are thousands of Westeners fighting for IS. If butcher Emwazi hadn’t been there, I don’t doubt they would have found another volunteer from within their murderous ranks. Surely, this is an irrelevant detail?
The real issue is that there is an organization, gaining ground across the Middle East and beyond, who mistakenly believe that it is possible to get folk to agree with them by killing anyone who doesn’t. It won’t work but it seems a lot of people will get hurt before they learn.