Ukrainian forces have repelled Russian advances throughout the summer, with minimal territorial gains reported by Russia despite significant personnel losses, according to an assessment from September 15th. The Air Force of Ukraine reported a group of UAVs moving in the east of the Donetsk region, with a course set for the Kharkiv region, as of September 15th. The approaching rainy and muddy season in Ukraine is expected to impact military operations. During the reporting window of September 15th, 2025, from 8:47 PM UTC to 9:02 PM UTC, Ukrainian military operations focused on consolidating gains and counteracting Russian offensives. Previous reports from September 15th indicated Ukrainian forces had eliminated a Russian breakthrough near Pokrovsk and were conducting clearing operations in Pankivka and surrounding areas on the Dobropillia axis. The Air Force of Ukraine also reported UAV activity in the Zaporozhye region and along the border of Odessa and Mykolaiv regions. In parallel developments, a Soviet-era "Fagot" anti-tank missile system was discovered in a forest near Józefów, Warsaw agglomeration, on September 15th, 2025. Polish security forces had previously neutralized a drone over government buildings and the Belweder Palace in Warsaw on the same day, detaining two Belarusian nationals, an event confirmed by Prime Minister Donald Tusk.
