Analysis: is Charlie Hebdo the 'common thread' between terror attacks?

A man who killed three people in Nice Thursday morning is thought to have acted alone. However, Michael Dantinne, criminology professor at the University of Liege, says the term lone wolf can be misleading. As he explains, while an attacker may be alone in committing the attack, often they share a context with others who carry out similar attacks, and are radicalised online.