Between 4:45 a.m. and 5:15 a.m. UTC on December 23, 2025, Ukrainian Air Force monitors and Telegram channels including monitor and єРадар reported the third wave of cruise missiles entering Sumy Oblast from the north, with six groups total directing towards Cherkasy Oblast, Pyryatyn, Lebedyn, and Chernihiv Oblast. Андрій Смолій stated "More rockets. The third wave enters Sumy region," while the Air Force of the Armed Forces of Ukraine reported rockets in Sumy Oblast towards Cherkasy Oblast and a cruise missile in northern Sumy vectoring to Cherkasy. Monitor noted new cruise missiles entering Sumy from Kurshchyna and two groups through Konotopskyi and Romenskyi districts to Pyryatyn, as єРадар reported another group past Trostyanets and towards Lebedyn, awaiting more Kalibr missiles. 🇺🇦НАШЕ ППО reported new rockets from Sumy to Chernihiv Oblast, and єТривога issued a high-speed target threat in Talalaivka, Chernihiv Region. War_monitor_ua on X confirmed four BpLA over Zhytomyr at 06:47 local time. Івано-Франківськ 24/7 noted power outages in Burshtyn, Voynilivska, and Halytska communities. These developments follow Kalibr launches from the Caspian Sea and air defense engagements over Kyiv reported earlier between 4:15 a.m. and 4:45 a.m. UTC, per prior Ukrainian Telegram channels.
