Ukraine's commander in chief said December was the first month that its drones "neutralized" roughly as many Russians as were called up.

President Trump indicated that he was ready to commit to the United States being involved in Ukraine’s future defense — but only, he said, because he was confident that Russia would not try to invade the country again.

Russia's overnight attack on Ukraine's energy infrastructure leaves nearly 800,000 homes without power amid freezing winter temperatures across the country.

Russia said that any troops sent to Ukraine by Western governments would be "legitimate combat targets", after Britain and France announced plans to deploy a multinational force there in the event of a ceasefire.

After Ukrainian President Volodymyr Zelensky claimed progress in developing a plan for postwar security guarantees, Russia’s foreign ministry on Thursday again rejected a core pillar of the emerging peace initiative: the deployment of British and European soldiers as part of a peacekeeping force.

The United Kingdom and France have agreed to deploy forces in Ukraine if it strikes a peace deal with Russia, British Prime Minister Keir Starmer said, in a renewed push by Western leaders to guarantee Kyiv’s post-war security and deter Moscow from further aggression.

Russia on Thursday slammed a plan for European peacekeepers to be deployed to Ukraine as "dangerous", branding Kyiv and its allies an "axis of war" and dousing hopes it could be a step towards ending the almost four-year-long war.

At least 1 million Ukrainians were without heat or water in the Dnipropetrovsk region after Russian strikes overnight damaged energy infrastruture.

Russia reportedly struck a critical infrastructure site in Ukraine’s Lviv region in the early hours of January 9, possibly using an Oreshnik ballistic missile, triggering nationwide air raid alerts and warnings from the US Embassy in Kyiv.