Unexplained fires and arsons have targeted key Russian infrastructure, including relay cabinets, electrical panels, and railway systems, from Moscow to Irkutsk, according to Ukrainian intelligence and local sources. In Ukraine, the warehouse and office of Optima-Pharm, the country's second-largest pharmaceutical distributor, were destroyed in a Russian attack on Kyiv on October 25th, potentially causing medicine shortages in central regions and an estimated $100 million in damages. This news comes as launches of "Shahed-136/131" type UAVs were reported from Orel air base, with enemy drones also flying towards a reservoir dam. These incidents of fires and arsons targeting Russian infrastructure are disrupting logistics and straining power networks, as reported by NOELreports. The destruction of the Optima-Pharm warehouse in Kyiv, which served the central regions of Ukraine, was a consequence of a Russian attack on the capital the previous day. Separately, positions of units of the Russian Federation's 6th Army, specifically the 68th/69th Division and the 44th Army Corps, were also noted as being at risk of flooding. Previous reports from October 26th, 2025, detailed intense fighting in eastern Ukraine, including street battles in Pokrovsk where approximately 200 Russian soldiers infiltrated, and the liberation of territories by Ukrainian forces near Kucheriv Yar. Overnight on October 25th-26th, Kyiv experienced a significant Russian aerial assault, resulting in fatalities and injuries, with debris from a downed UAV impacting a residential building. The Slovak company DefTech announced the adoption and deployment of its Wolf 25 AD complex for service by the Armed Forces of Ukraine within the reporting window of 11:15 AM to 11:45 AM UTC on October 26th. Additionally, Ukrainian forces on the left bank of the Oskil River near Kupyansk are facing a critical situation with destroyed crossings and under-attack logistics, as stated by sternenko on X at 12:15 PM UTC on October 26th. Data published by OSINT analysts Oko Hora on October 26th, 2025, detailed air defense positions around Moscow, indicating rotations of Pantsir, S-300, and S-400 systems. President Putin claimed Russia's nuclear forces are at the highest global level and announced the completion of Burevestnik missile tests, stating they flew 14,000 km for 15 hours. Putin also asserted that Russian forces had encircled approximately 10,000 Ukrainian troops near Krasnoarmeysk and Dimitrov. An earlier report on October 26th noted that the mayor of Kharkiv confirmed the city was hit by a drone, and two MiG-31K aircraft were relocated from Akhtubinsk to Savasleyka airfield, potentially equipped with Kinzhal aeroballistic missiles.