ISIS is bragging all over the place that they did it.
It would not surprise me if Isis did this, nor would it surprise me if Russia allowed it to happen or were even behind it.
The false flag theory makes a lot of sense, but also does allowing the event to happen. Both give the Kremlin what they wanted, a rallying cry to support mobilization and continuing the war.
The “small” amount of egg on their face for not stopping the attack will soon be forgotten by the public with the cry of save the motherland drowning any criticism out.
I don’t trust any claims coming from Muslim terrorist groups, the Russian government, the Ukraine government, or the US government (in particular, the CIA).
Will we ever know the truth?