My right hon. Friend makes a very good point. This is a complex situation and we should always be looking to see what tools we have at our disposal to ensure that those who are guilty of terrorism, or of supporting terrorist groups, are brought to justice. That means ensuring that we have the right laws in place. I referred earlier to the Counter-Terrorism and Border Security Act, which received Royal Assent only last week, which gives the courts more powers. There are already powers in existence, including those covering extra-territorial jurisdictions. He made another important point about something else we could look at. I have read that article and heard what Professor Ekins has said in the past, and I think that it is worth considering it carefully.