On Dec. 15, the EU sanctioned two rival oil traders it accused of playing a major role in the clandestine Russian energy market. The Trump administration, which has called on the EU to stop all imports of Russian fuel, sanctioned Russia’s two largest oil companies this fall as part of the president’s sped-up effort to end the war in Ukraine.

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

LONDON -- At least seven people were killed and 39 injured in Ukraine after Russia and Ukraine exchanged hundreds of long-range drone strikes Wednesday night into Thursday morning, according to Ukrainian officials.

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

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

Russia fired more than 650 drones and three dozen missiles at Ukraine in a major pre-Christmas attack, killing at least three people including a child.

Lieutenant General Fanil Sarvarov, head of the Operational Training Directorate at the General Staff of the Russian Armed Forces, was named as the high-ranking officer killed in the explosion. He oversees combat training for Russia’s war in Ukraine.

Moscow is likely stationing new nuclear-capable hypersonic ballistic missiles at a former airbase in eastern Belarus, a development that could bolster Russia’s ability to deliver missiles across Europe,