Putin reacts to losses in the Ukraine war with old Soviet tactics. Russia should rely on an old Soviet fighting theory in order to get moving again and avoid further high casualties.

So far, however, the Soviet tactics have not achieved any new successes for the Kremlin. The Soviet deep-battle theory should enable Russian forces to break through Ukrainian defenses, writes the US think tank Institute for the Study of War (ISW) The ISW also doubts the current success of such a “deep operation”