 We are 15 years since 9-11. We've fortunately not had the same scale of attacks since, and yet American's fear of terrorism are at their highest level since the immediate aftermath of 9-11. And that's a strange phenomenon. I think social media is the binder in that story. Social media has affected war and conflict in the same way the Telegraph did. It's affected everything from the battlefield use and awareness, but it's also changed the way the public and policymakers link to and think about conflict itself. What social media has done has not just allowed groups like an ISIS to recruit, to inspire abroad, but it's also created a new intimacy in terms of our connection to terrorist attacks. But in turn, social media has changed the way we experience acts of terrorism, and it's another way of putting it, made terror more terrorizing.