The terrorist attacks in Paris this week left France and much of the free world desperately looking for answers in order to prevent future tragedies.
What can we learn from these attacks that might help us in the future? What are the hallmarks of this breed of radicalisation and how should they be addressed? What do these attacks suggest about freedom of speech and how religious communities might respond to radicalisation?
Mal Fletcher discussed these in this interview with BBC Manchester's Mike Shaft.