Ukrainian forces have completed the liberation of Zapadne, a village southwest of Dvorichna on the Kupiansk front, destroying the southern portion of Russia's bridgehead on the western bank of the Oskil River. According to the account of the operation reported by the analytical channel RFU, the decisive assault was carried out by Ukrainian troops alongside Colombian volunteers serving with the Khartia Corps — after weeks of drone strikes had systematically cut the Russian garrison off from resupply and from any route of escape.
The forest that sealed the pocket
The battle turned on the forest east of Zapadne. Earlier Ukrainian advances had already divided the wider Russian Velykyi Burluk bridgehead, leaving that forest exposed to pressure from two directions — and Ukrainian drone operators spent weeks dismantling the Russian defensive positions inside it. FPV drones hunted individual soldiers and struck identified shelters, while heavy Vampire bomber drones dropped munitions onto Russian hideouts, forcing defenders out of protected positions and into open terrain. Footage from the operation shows multiple Russian shelters burning after repeated strikes.
Rather than rushing infantry into prepared defences, Ukraine first used its drones to destroy Russia's ability to defend the tree line. Only then did the Colombian assault troops move in — advancing on foot across the surrounding fields before entering the forest and clearing it systematically. The remaining hideouts were located one by one, their defenders eliminated or captured, until the forest was consolidated and Zapadne was cut off completely from every nearby Russian position.
For the Russian troops still holding eastern Zapadne, the situation was hopeless. Ukraine controlled the three major forest areas around the village to the north, south and east, while Ukrainian soldiers already held positions in its western part — surrounding the defenders with no reliable route back toward the river and no way to be resupplied. Ukrainian assault groups then began clearing the settlement itself, with reconnaissance drones overhead directing them to occupied houses and basements. Russians willing to surrender were taken prisoner; those who kept fighting were engaged at close quarters. The pocket collapsed rapidly, and with it the southern half of Russia's Dvorichna bridgehead ceased to exist.
A river that kills logistics
The Oskil River is the central fact of this battle. Every soldier, vehicle or supply delivery intended for the bridgehead first had to cross it under intense Ukrainian drone surveillance, and Russian attempts to stabilise Zapadne with counterattacks and reinforcements repeatedly failed as crossings were destroyed in transit. With no reliable supplies or reinforcements, the Russian troops grew increasingly isolated — the very condition Ukraine needed before attacking.
Ukrainian reconnaissance and strike drones now monitor the potential crossing points and engage any enemy movement, while Russian drone and artillery support in the sector remains limited, according to the account. It is a textbook demonstration of how a river-backed bridgehead becomes an operational liability: hard to supply, impossible to evacuate, and eventually indefensible.
A sector that has been turning for weeks
The operation did not come out of nowhere. In late August, the Ukrainian mapping project DeepState reported that the Fiholivka–Dvorichna–Zapadne sector had been "somewhat stabilized" after Ukrainian troops expelled Russian forces from Fiholivka and were neutralising Russian infiltration groups attempting to return. The Dvorichna bridgehead — Russia's foothold on the western bank of the Oskil — was the platform from which Moscow had been threatening Kupiansk from the north.
With the southern flank now fully secured, experienced Ukrainian formations in the Kupiansk sector can concentrate their efforts directly on Dvorichna. The method is consistent: first divide the bridgehead with advances, then isolate individual pockets with drone strikes, then clear them with assault troops — dismantling Russia's position piece by piece.
International volunteers on the northern front
The reported role of Colombian volunteers is part of a broader pattern. Thousands of foreign volunteers serve in Ukraine's forces, and on the north-eastern sectors they have repeatedly been committed to assault work — including, according to the report, the RUG unit that fought at Zapadne. For Moscow, it is another signal that Ukraine's manpower pipeline, fed by motivated volunteers, is holding where Russia's is strained.
Zapadne will not end the war, but it illustrates the doctrine now deciding it: drones isolate, infantry clears, and geography punishes the side that cannot supply its troops. Russia's Dvorichna bridgehead was meant to be the lever for a northern push on Kupiansk. Ukraine is taking it apart, forest by forest.
Watch our latest video coverage here: https://www.youtube.com/watch?v=oI5nACAqwYI