Russian Forces
Advance: 5.93 km²
Advance = 5.93km2
Russian forces made large gains on the Toretsk front, capturing a number of Ukrainian defences, which have been there for over a decade. I was initially sceptical of Russian claims of great success in this area, as its not the first time they have claimed to have breached the 2014 line, but recent footage and photos has shown it to be true. Russia was able to easily push forward, suffering minimal casualties due to little Ukrainian resistance, and are rapidly approaching the east side of Pivnichne (red dot below Druzhba).
Ukraine's manpower and equipment issues mean it cannot properly man every area of the front, and has to move its units around to the 'hot' areas where needed. This leaves the relatively 'quiet' areas with fewer forces and equipment. As you might have noticed, Russia has been exploiting this by rotating its attacks around, launching small assaults here and there, before pausing to dig in. This has allowed it to make sporadic progress, but in dozens of different areas of the frontline. Ukraine doesn't have the reserves to respond to every attack, and by the time they do reinforce an area, Russian assaults there have already stopped, and attacks take place in other places.
With the Toretsk area of the front, Ukraine is in trouble as other key areas (Vovchansk/Liptsy, Chasiv Yar, Ocheretyne) have sucked up a large number of their forces, leaving it with little to defend this area. If Ukraine cannot reinforce the units here quickly, Russia may be able to make great progress in capturing the town.
On the other hand, whether Russia even intends to advance much further here is unknown. I could not find much information about the size of the Russian grouping in this area, and what equipment they have, but it is a distinct group, separate to the ones operating north and south-west of them. . Russian forces here may not actually have the numbers to begin a lengthy town assault of a place as large as Toretsk, and may just be trying to draw Ukrainian attention.