The world woke up to a new threat in 2014 in the shape of the Ebola virus, which tore through Guinea, Liberia and Sierra Leone.
The man who got on a Parisian bus with me Wednesday was an Arab who had not shaven in four days. He had dark olive skin and kinky black hair and was visibly unbalanced: drugs? He sang to a popular tune "I'm going on Jihad. Won't you come on Jihad with me too?" He risks five years in prison and a 75 thousand euro fine.