Russian forces reportedly cut off and surrendering in Ukraine's Kupyansk as supply lines fail. Only dozens of isolated troops remain in strategic city.

Ukrainian military says ‘numerous explosions’ at Novoshakhtinsk refinery; Zelenskyy says ‘very good’ talks held with Trump envoys. What we know on day 1,402

Ukraine said a resistance agent was able to sneak into a Russian hangar and destroy two Russian fighter jets.

Russian investigators said Monday they were looking into whether Lt. Gen. Fanil Sarvarov was assassinated by Ukrainian intelligence services.

Poland scrambled fighter jets on Christmas morning after detecting a Russian reconnaissance aircraft near its airspace over the Baltic Sea.

The first draft essentially called for Ukraine’s surrender. The revised version includes the security guarantees Kyiv wants to prevent future Russian aggression.

Polish Air Force fighters intercepted a Russian military reconnaissance aircraft that came near Polish airspace while over the Baltic Sea on Thursday.

Ukrainian troops from the 92nd Separate Assault Brigade reported detecting a group of Russian soldiers advancing toward their positions on horseback. Video footage released by the brigade shows the mounted troops being identified and struck by Ukrainian drone operators shortly after detection.