American and Ukrainian representatives continued discussions on a possible framework for a peace deal to end Russia’s full-scale invasion of its neighbor on Saturday.

Russian forces have advanced on several fronts recently. President Vladimir V. Putin signaled after talks with U.S. officials that he was not budging from demands.

Ukraine said it hit Rosneft PJSC’s Ryazan oil refinery while Russian military conducted a massive attack on Ukrainian energy infrastructure.

U.S. President Donald Trump's outgoing Ukraine envoy said a deal to end the Ukraine war was "really close" and now depended on resolving two main outstanding issues: the future of Ukraine's Donbas region and the Zaporizhzhia nuclear power plant.

Mark Rutte's comments come a day after Putin rejected US proposals for peace in Ukraine after talks with US negotiators in Moscow.

NATO fighter jets were scrambled and air defense systems put on alert in Poland in response to Russia’s latest overnight drone and missile strikes in Ukraine.

Putin said his five-hour talks with Trump’s special envoy, Steve Witkoff, and son-in-law Jared Kushner were “useful,” but also “difficult work.”

In a disused warehouse at an undisclosed location in Ukraine, a military drone instructor who goes by the call sign "DC" showed CBS News a makeshift practice course that students must learn to fly the increasingly indispensable devices through before they join the country's defense against Russia.

European governments are fearful that Washington is laying the groundwork for an ultimatum to Kyiv on Moscow's terms.