Russian President Vladimir Putin said Russia is making significant military advances in Ukraine, identified UK military installations as legitimate targets, and warned that attacks on Russian soil would trigger military retaliation. The comments came as Russia sustained air strikes on Kyiv for a sixth consecutive day, with at least four people killed in an attack involving approximately 20 Iskander-M missiles and cluster warheads. Russia also intensified strikes on Odesa, a crucial Black Sea port, and conducted an operation affecting Izmail that prompted closure of a border crossing to Romania. Prediction markets assign a 24% YES probability to Russian forces entering Sloviansk by December 31, 2026, up from an earlier 22% reading; separate pricing has also been supportive of Russian forces entering cities such as Dopropillia. The developments have heightened concern about further territorial advances and possible widening of the conflict, while ceasefire diplomacy remains stalled and European officials seek additional air-defense systems for Ukraine.