Newsweek's Foreign Service

Hilary Hurd and Erin Marie Saltman join Newsweek's Josh Lowe as he asks how governments can prevent erratic and unpredictable attacks by so-called “lone wolf” extremists. Gavin Long, the man who killed three police officers in Baton Rouge, Louisiana, had past links with radical groups. But in politically charged YouTube videos infused with violent rhetoric, he insisted he acted alone. In Nice, where Mohamed Lahouaiyej Bouhlel killed at least 64 people and wounded dozens more with a truck, the Islamic State militant group (ISIS) took credit for the carnage. But Bouhlel’s links with the group are unclear, and likely indirect. So how do you prepare for attacks that come without warning or large-scale planning? Do we now live in a world where any angry, isolated person who comes across a specific message can become a terrorist? Or, with the right knowledge, can governments and security services separate genuine dangers from false alarms, and turn those most at risk of perpetrating appalling crimes back from...