Russian forces have gained ground on the eastern approaches to Sloviansk and continue to prioritize an eastern route toward the city, according to the Institute for the Study of War (ISW). Their earlier push from the northeast had bogged down, and Russia now aims to set up a future assault on one of the last major cities Ukraine still holds in Donetsk Oblast. A quick move on the city itself remains extremely unlikely, ISW said.
Russia's 2026 summer campaign in the east has advanced through field edges and small villages rather than the breakthroughs the Kremlin keeps promising, the grinding pattern that has defined the fighting across Donetsk Oblast for years.
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The eastern approach
Ukrainian military observer Kostiantyn Mashovets reported that Russian forward units are advancing across several tactical areas at once in the Sloviansk direction. He said the command of Russia's 3rd Combined Arms Army rushes assault infantry forward right after each successful infiltration. Russian troops reached the southeastern edge of Pyskunivka, east of Sloviansk, from the east and northeast, moving off positions they had seized on the southern bank of the Siverskyi Donets, Mashovets said. Zakitne lies northeast of Pyskunivka and Kryva Luka southeast of it, and ISW read the advance as evidence Russia has consolidated positions in both.
They also infiltrated the southern and southeastern outskirts of Mykolaivka from western Rai-Oleksandrivka. ISW assessed that Russia is running a dual effort to connect its units near Kryva Luka with those at Rai-Oleksandrivka, so it can assault Mykolaivka from dominant terrain to the east and south at once. Mashovets added that other Russian groups slipped through three settlements along the E-40 Bakhmut-Sloviansk highway, trying to hold the western bank of the Siverskyi Donets-Donbas Canal and reach the river just east of the city.
ISW observed reports on 23 August that Ukrainian forces repelled a Russian infiltration attempt in Mykolaivka.
Oleksandr Borodin, spokesperson for Ukraine's 3rd Army Corps, said the Lyman direction falls in his corps' zone and that Russia's goal there is to half-encircle the Sloviansk-Kramatorsk agglomeration from the flank—first securing bridgeheads across the rivers, then cutting logistics. He called those plans unrealistic:
"We have quite serious defensive positions there and have been preparing for a long time. The capabilities they currently have to try to accomplish this task are insufficient even to come close to achieving such a goal."
Why Moscow switched directions
Russia prioritized attacking Sloviansk from the northeast through Lyman when it opened its spring-summer 2026 offensive, but that effort has largely stalled. The Siverskyi Donets River, which loops north and northeast of the city, together with a web of canals, handed Ukrainian defenders a natural moat. So Russian commanders now treat Mykolaivka as a key prize. Taking it would let them strike west toward Sloviansk from the east, skirting the water obstacles that blocked the northeastern route.
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A slow road into the Fortress Belt
Sloviansk anchors the northern end of Ukraine's Fortress Belt, a chain of fortified cities that has blunted Russian advances in Donetsk Oblast since 2014. ISW cautioned that Russian forces are extremely unlikely to make fast gains west of Mykolaivka, since they still need to seize several more settlements first.
Ukraine's President Volodymyr Zelenskyy said on 23 August that Putin has ordered his army to seize all of Donetsk Oblast by 31 December. By ISW's count, it is the 15th such deadline since 2022, and Russia has missed every one that has come due.
Zelenskyy put Russia's frontline casualties this year at around 267,000, including about 155,000 killed, and said 70% to 80% of them fall in the Kostiantynivka direction. Russia holds about 79.89% of Donetsk Oblast, by ISW's count, and Zelenskyy said the Kremlin is preparing to mobilize around 300,000 men after the 18–20 September State Duma elections, partly to reinforce Donetsk and Luhansk oblasts.
