Only way to truly stop DIY jihadis is to interrupt their journey to radicalisation
Once again we have witnessed a terrorist attack on the streets of London - and once again the obsession becomes how to guard against such atrocities. So what is the right approach to take?
Arm all the police? Turn Westminster into a fortress or Iraqi-style 'Green Zone'? Or none of the above?
None of the above, not surprisingly. We need to keep in mind that while this was indeed a terror attack inspired by the ideology of Islamic extremists such as Isil, it is nowhere near the scale of indiscriminate danger produced by the IRA's bombing campaigns in the 1970s and 1980s.