Overnight attention fixed on Sasovo in Ryazan region, where Yandex reported an incident at its data center housing two supercomputers. The company spoke of a power cut and uncertain restoration, while independent outlets called it the first Ukrainian strike on Russian data-center infrastructure, followed by a nationwide Runet failure. Investigators later opened a terrorism case over a UAV hit. Ukrainian drones were also reported reaching Omsk, 2,500 km from the border.
Meduza reported 33 killed when two buses burned in Kramatorsk after a Russian strike, publishing photos. By evening Russian outlets reported a city-wide emergency blackout in Kyiv, with transport halted and Mayor Klitschko speaking of a survival regime and urging residents to leave for winter.
Putin began a two-day visit to Turkmenistan, meeting Iran's president on the Middle East.