(KUPIANSK, KHARKIV OBLAST, UKRAINE) – Russian forces remaining in Kupiansk are increasingly confined and face sharply narrowing options as Ukrainian troops continue a slow and methodical operation to regain full control of the city, according to Ukrainian military officials.
Viktor Trehubov, head of communications for Ukraine’s Joint Forces Group, said that most of the remaining Russian troops inside Kupiansk have now been compressed into a single downtown block. He said this situation reflects encirclement rather than any organised tactical withdrawal or defensive regrouping.
Ukrainian units have advanced gradually, clearing the city area by area rather than attempting rapid assaults. Supply routes into the city were cut first, turning remaining Russian positions into isolated liabilities. As a result, troop rotations became impossible and deliveries of ammunition, fuel and medical evacuation support slowed significantly.
Ukrainian drones have played a central role in the operation, providing constant surveillance and targeting any attempts by Russian forces to move or reposition. According to Ukrainian officials, this persistent aerial monitoring removed concealment and steadily weakened remaining defences.
One Russian pocket remains in the city centre, surrounded and exposed. Trehubov said Ukrainian forces are seeking to complete the operation while minimising casualties among their own troops, a strategy that signals confidence in their position and reflects an assessment that time is working against the Russian forces.
Kupiansk had previously served as a key logistical hub supporting Russia’s military presence in the region. Ukrainian officials now describe the city as a trap, where a force confined to a single block can no longer manoeuvre, resupply or adapt.
Military analysts note that when an occupying force is reduced to such a limited area, the range of possible outcomes narrows quickly. Withdrawal becomes increasingly difficult, surrender becomes more likely, and destruction becomes a real risk if neither option is taken.
Separate developments further illustrate the pressure on Russian logistics. Satellite imagery released by Ukrainian sources shows that a Russian ammunition depot in occupied Debaltseve, Donetsk Oblast, has been completely destroyed. The imagery shows flattened structures and widespread burn damage, indicating total loss rather than limited impact.
Additional video footage from inside occupied Debaltseve captured a second strike followed by a powerful detonation. Fires continued to burn for hours, accompanied by repeated secondary explosions, suggesting large quantities of stored munitions ignited in sequence.
Local accounts described prolonged explosions consistent with the destruction of artillery shells, rockets and other heavy ammunition stored in bulk. Such losses are likely to have both immediate battlefield consequences and longer term effects on supply capacity.
Pro Russian channels have acknowledged losses linked to the strike, posting messages referring to killed personnel stationed near the depot. While casualty figures have not been independently verified, the tone of these messages suggests a significant blow.
Further incidents inside Russia have raised questions about the effectiveness of Russian air defence. Footage from Nova Adygea and Aphipsky in Krasnodar Krai shows a residential building damaged after a Russian air defence missile struck a civilian area. Russian war correspondents acknowledged the damage was caused by Russian air defence rather than a Ukrainian strike.
Despite this, Russian state media attributed the explosion to a Ukrainian drone, a claim contradicted by multiple videos showing the missile trajectory. Additional footage from across Krasnodar Krai shows repeated air defence launches, highlighting risks to civilians from falling interceptors.
In Belgorod, evacuations were ordered after an unexploded munition was found embedded in the ground on Gubkina Street. Regional authorities said explosives specialists were inspecting the site. Residents suggested the object may have been an aerial bomb. Belgorod has previously experienced similar incidents, including one in April 2023 that caused a large crater and damaged vehicles.
