Nobody has claimed responsibility for a drone attack on Khor Mor gas field which cut power across most of Iraqi Kurdistan on Wednesday night. But whoever the perpetrator is, they have sent a clear message to governments around the world: non-state militant groups can now use relatively cheap, accessible technology to cause major disruption at a national level. This threat has not yet struck Britain, but most accept that it will at some point. The consequences are potentially disastrous unless we find solutions, and fast.
