The Russian retreat in this strategic point of the Kharkiv region also exposes the limitations of Moscow's official narrative about its alleged control over the eastern front.
Kupiansk, a vital logistics hub for Russian operations in northeastern Ukraine, had been presented by the Kremlin as "liberated" in November. Military spokespeople confirmed that these units are being located and neutralized progressively, building by building, while Russia unsuccessfully tries to break the siege from other directions.
The cutting of Russian logistics was the central element of this counteroffensive.
The evolution of Kupiansk thus becomes a central argument for Kyiv in its negotiations with the United States and other allies, at a time when external support is decisive to sustain the war effort.
While fighting continues and Russia attempts to reorganize its forces, the growing Ukrainian control over Kupiansk represents a strategic and symbolic blow to Moscow and reinforces Ukraine's position as an actor still capable of resisting, counterattacking, and conditioning the course of the conflict.
"Achieving results on the battlefield is crucial for achieving results in diplomacy," Zelensky noted during his visit to the area, a message directed at both his troops and international partners.
Without secure land access, the Russian troops can only receive ammunition and supplies sporadically via drones, which drastically reduces their chances of sustaining the fight.
