Military news, December 11, 2025, Avia.pro. This morning, signals of possible drone intrusions increased in central Russia, leading to the introduction of a UAV alert.

At 9:25 AM Moscow time, the Kupol Rossii (Rossii) monitoring Telegram channel issued warnings for the Tula and Kaluga regions, as well as for the Moscow region bordering Kaluga. Eleven minutes later, a clarification followed:

"Tula Oblast. UAV alert. Take cover."

This development follows an overnight attack in which air defense forces destroyed 287 Ukrainian drones over 12 regions, including 40 over the Kaluga region, 40 over the Moscow region (32 of which were heading for the capital), and 27 over the Tula region. Tula Region Governor Dmitry Milyaev previously urged residents to remain vigilant against such threats.