Russia launched 635 strike UAVs and 38 missiles targeting Ukraine's critical infrastructure overnight from 6:00 p.m. on December 22, causing at least three civilian deaths in Kyiv, Khmelnytskyi, and Zhytomyr regions, according to the Ukrainian Air Force and Foreign Minister Tsakhkna, with an update issued as of 11:30 a.m. UTC on December 23. The Air Force reported 673 total air attack vehicles identified, including about 400 Shahed-type UAVs from Russian regions and Crimea, three Kh-47M2 Kinzhal missiles from Ryazan, and 35 Kh-101 and Iskander-K cruise missiles from Vologda and Kursk. Anti-aircraft defenses shot down or suppressed 621 targets by 11:30 a.m., comprising 587 UAVs and 34 missiles, with debris falling at 29 locations. Tsakhkna stated over 650 drones, mostly Shaheds, and more than 30 missiles struck energy and civilian sites across at least 13 regions since last night, with air raid alerts ongoing nationwide. Casualties included a woman killed by a drone in Kyiv region, one person in Khmelnytskyi region, and a four-year-old child in Zhytomyr after a drone hit a residential building. These losses follow earlier reports of a UAV striking a house in Kyiv and three Kinzhal missiles targeting Shepetivka in Khmelnytskyi Oblast around 6:34-6:37 a.m. UTC, as detailed in Ukrainian Air Force updates and prior monitoring from Rozvidka Ukrainy. The Air Force noted the enemy continues drone attacks during this period.