The Russian military announced a coordinated strike on Ukraine, using Oreshnik missiles, in retaliation for Kyiv's "attack on President Putin's residence".
Russia declares Western soldiers deployed to Ukraine will be legitimate targets, following statements from the UK and France about deploying forces after a ceasefire.
President Zelensky announced the director of Ukraine's Security Service, Vasyl Maliuk, has resigned amidst a high-level reshuffle within the country's intelligence system.
Russia's Geran unmanned aerial vehicles are now carrying man-portable air defense missiles, prompting Ukrainian experts to issue warnings to interceptor aircraft forces.
Ukrainian intelligence claims to have staged the fake death of a commander targeted by Russia for assassination, helping him escape and tricking Moscow out of a bounty.
President Zelensky has appointed Kyrylo Budanov, head of the military intelligence agency, as chief of staff, replacing Andriy Yermak, who resigned in 11/2025.
Deputy Chairman of Russia's Security Council Dmitry Medvedev stated Ukraine would face "inevitable" retaliation for an alleged New Year's Eve attack on civilians in Kherson province, a claim Kyiv has denied.
