"When we kill five out of 10 of their soldiers at once, they are replenished again over the course of several hours," a Ukrainian officer said recently of the Russian troops that for weeks have besieged the town of Bakhmut in eastern Ukraine. The Russians, he added, stormed the defenders' positions "five, six, seven times" a day.
In the unprecedented ferocity and relentlessness of the Russian assault, Bakhmut might signal the emergence of a new Kremlin warfighting doctrine.