Russia has experienced a litany of deadly attacks in the capital, in the Caucasus and in several provincial towns. The shock caused in the country by the terrorist attack on the Crocus City Hall in Moscow inevitably evokes the dark hours of November 13, 2015, after the Bataclan attack in Paris.

There too, it was the day before a weekend, in a concert hall where a large and carefree audience had come to attend a rock concert. Everyone remembers the hostage-taking at the Dubrovka theater in Moscow in October 2002 and the brutal assault by Russian special forces (128 dead)