Ukraine faces difficult choices about how much deeper its military should get drawn into a protracted fight over the besieged city of Bakhmut, as Kyiv prepares for a new counteroffensive elsewhere on the front that requires conserving weapons, ammunition and experienced fighters. 

Russia has escalated its assault in the area in recent days, unleashing savage fighting that has underscored the high cost of the battle. Russian mercenaries and released convicts from the Wagner group pushed into the neighboring salt-mining town of Soledar and inched closer to Bakhmut, the capture of which has eluded them for months despite an advantage in firepower and the willingness to sacrifice troops.