Russian Forces Edge Toward Kostiantynivka in Ukraine’s Eastern Front

Russian troops are moving within about one kilometre of Kostiantynivka’s southern outskirts, according to the Ukrainian battlefield-mapping project DeepState. Ukrainian army chief Oleksandr Syrskyi said the forces are using infiltration tactics and Ukrainian units have repelled 83 assaults since Monday. The Russian Defence Ministry claims capture of Novodmytrivka north of the city, while Chief of the General Staff Valery Gerasimov earlier noted advances on both north and south flanks.

South China Morning PostRussian troops close in on Kostiantynivka, Ukraine says, as assaults intensify in Donetsk sectorReutersThe Independent

Kostiantynivka lies in a Ukrainian-designated “fortress belt” of fortified towns in Donetsk. The belt aims to blunt Russian offensives, which in recent months have secured only small settlements; the most notable gain was Pokrovsk.

Russian troops close in on Kostiantynivka, Ukraine says, as assaults intensify in Donetsk sectorReutersSouth China Morning PostThe Independent

Key actors include Ukrainian army chief Oleksandr Syrskyi, Russian Chief of the General Staff Valery Gerasimov, the Russian Defence Ministry, the Ukrainian mapping project DeepState, and the Kursk group, a Ukrainian unit active on social media.

Russian troops close in on Kostiantynivka, Ukraine says, as assaults intensify in Donetsk sector

Russian forces are now ~1 km from Kostiantynivka’s southern edge. Ukrainian sources report 83 small-unit assaults this week. Parts of the city’s southeast are marked as a contested “grey zone.” Russian claims of taking Novodmytrivka and Myropillia remain unverified.

South China Morning Post

Syrskyi said Ukrainian troops are conducting counter-sabotage inside Kostiantynivka and stressed the persistence of Russian infiltration attempts. The Russian Defence Ministry reiterated its claim of seizing Novodmytrivka, and Gerasimov’s earlier comments confirmed advances on both city flanks. President Volodymyr Zelensky noted unusual activity along the Ukraine-Belarus border, saying Kyiv is closely documenting the situation.

Russian troops close in on Kostiantynivka, Ukraine says, as assaults intensify in Donetsk sectorReutersSouth China Morning PostThe Independent

The Kursk group dismissed the Russian claim of capturing Myropillia as a “complete lie,” and Ukrainian officials have questioned Moscow’s territorial statements.

Russian troops close in on Kostiantynivka, Ukraine says, as assaults intensify in Donetsk sector

Russian statements assert control of Novodmytrivka and Myropillia, but Ukrainian sources deny the latter and independent verification of the former is lacking; the exact status of the city’s grey zone remains unclear.

Russian troops close in on Kostiantynivka, Ukraine says, as assaults intensify in Donetsk sector

• “We are repelling the Russian occupiers' persistent attempts to gain a foothold in the outskirts of Kostiantynivka using infiltration tactics.” — Oleksandr Syrskyi, Ukrainian army chief

The Independent

• “Counter-sabotage measures are going on in the city," Oleksandr Syrskyi said on the Telegram app.” — Oleksandr Syrskyi, Ukrainian army chief

The Independent

• “Yesterday, there was rather unusual activity along sections of the Ukraine–Belarus border, on the Belarusian side. We are closely documenting everything and keeping the situation under control,” — Volodymyr Zelensky, President of Ukraine

The Independent

• “complete lie” — Kursk group, Ukrainian military (Facebook)

Ukrainian forces will maintain counter-sabotage while monitoring further Russian attempts to breach the fortress belt. U.S.-mediated peace talks remain stalled over territorial demands, leaving the Kostiantynivka front poised for possible escalation.

Russian troops close in on Kostiantynivka, Ukraine says, as assaults intensify in Donetsk sector