Ukraine’s army, according to recent reports in domestic media, supposedly scored a victory of some sort in the northeastern Kharkiv sector and pushed Russian forces back fairly significantly. Here are five Kyiv Post questions and answers about that. 1. What actually changed on the ground and who was responsible? Estimates of the territory formerly under Russian control that is now under Ukrainian control, vary from 150-250 square kilometers (95-135 square miles) of territory liberated by Ukrainian forces north of the city Lyman, which had been and remains a lynchpin of Ukrainian defenses in the northern-Donetsk/southern-Kharkiv sector since the start of Russia’s second invasion.JOIN US ON TELEGRAMFollow our coverage of the war on the @Kyivpost_official. Ukrainian news and military information platforms are reporting up to 10 villages liberated and elements of two Russian Motor Rifle Divisions – the 2nd and 14th – cut off and partially surrounded in that pocket of territory. There are no confirmed reports about how many Russian troops are cut off. Speculation puts the figure between a few hundred and several thousand. As a result of the Ukrainian advance, those isolated Russians are separated from supply and support by the Zherebets River, a north-south waterway that, aside from bridges, is difficult and in most places impossible to cross by vehicle. Russian forces not encircled, including elements of both those units, have been forced to retreat between 10-15 kilometers (6-9 miles) to an old defensive line to the east, along the Zherebets. Overall command has been under 3rd Army Corps and its commander, Brigadier General Andriy Biletsky, a former civilian.