Ukraine has lost over 40% of the territory in Russia's Kursk region that it captured in a surprise incursion in August as Russian forces have mounted waves of counter-assaults, a senior Ukrainian military source said.

Ukrainian forces hit a radar station of an S-400 anti-aircraft missile system in Russia's Kursk Oblast on the night of 23-24 November. Source: Ukraine's General Staff Details: The General Staff reported that Ukrainian troops had struck the positions of an anti-aircraft missile division from the 1490th Guards Anti-Aircraft Missile Regiment of the 6th Army of the Russian Federation in Kursk Oblast.

Ukraine has lost over 40 percent of the territory in Russia's Kursk region that it rapidly seized in a surprise incursion in August as Russian forces have mounted waves of counterassaults, a senior Ukrainian military source has said.

Meanwhile, Ukraine's surprise incursion into Russia's Kursk region is faltering. Russian troops have pushed Kyiv's offensive backwards. Experts have questioned the success of the offensive, with one calling it a "strategic catastrophe" given manpower shortages faced by Ukraine.

The move marks the latest reversal from the White House on what weapons it’s sending and how freely Ukraine can use them.

Ukraine has lost over 40% of the territory in Russia's Kursk region that it seized in a surprise incursion in August as Russian forces have mounted waves of counter-assaults, a senior Ukrainian military source said.

Russian forces launched drones across Ukraine overnight on November 24 for another air attack. The enemy kamikaze drones entered Ukraine’s airspace from the northern direction, according to the Air Force of the Armed Forces of Ukraine and the air alert map.