On June 14, 2025, at around 4 a.m. local time, agents of the Defense Intelligence of Ukraine conducted a sabotage operation targeting a power substation in Kaliningrad, Russia. The agents drained coolant from a power transformer which subsequently caught fire, resulting in severe damage to the substation. This sabotage caused a power outage affecting several nearby Russian military and defense industry facilities, with estimated damages around $5 million. Ukrainian intelligence emphasized that Russia has no safe rear areas left and vowed to continue efforts to weaken Russian military capabilities both inside Russia and in occupied Ukrainian territories. The incident follows prior Ukrainian drone attacks on Russian air defense systems in the Zaporizhzhia region, indicating an ongoing campaign against Russian military infrastructure.

On June 14, 2025, at around 4 a.m. local time, agents of the Defense Intelligence of Ukraine conducted a sabotage operation targeting a power substation in Kaliningrad, Russia. The agents drained coolant from a power transformer which subsequently caught fire, resulting in severe damage to the substation. This sabotage caused a power outage affecting several nearby Russian military and defense industry facilities, with estimated damages around $5 million. Ukrainian intelligence emphasized that Russia has no safe rear areas left and vowed to continue efforts to weaken Russian military capabilities both inside Russia and in occupied Ukrainian territories. The incident follows prior Ukrainian drone attacks on Russian air defense systems in the Zaporizhzhia region, indicating an ongoing campaign against Russian military infrastructure.