The episode does not radically change the face of the war, but it is rich enough in lessons to "deeply concern" the Kremlin. We owe this chaos to a few thousand Russians regimented in two militias under the protection of the Ukrainians.

These ideological enemies seem to have made a pact under the aegis of Ilya Ponomarev until the hoped-for overthrow of power in Moscow. It is difficult to say if the commando of snipers continued its spectacular raid across the border or if it had been "crushed" by...