Restraint is necessary , who ever mainly in the west eulogizes the recent event in Moscow has to be apprehended or monitored.

Moscow may organize a similar attack and that is a surreal yet a real scenario.
Celebrating is almost like asking for it and who would gain from this action?

139 died because they wanted to commune and be inspired from music.

In a 1000 years this slavic barbaric confederation has made its own standing in culture.

We have to respect Russian suffering and make sure this kind of attack will not become endemic what many islamofascists see the west as a bitch with open legs and arms and mouth seeking to produce a bastard looking for his dad in Mecca eventually only to attack his own uncle in Tel Aviv or Jerusalem Palestinian or Jewish.