Ukraine's Air Force on Dec. 29 denied claims spread by Russian media about a Ukrainian pilot surrendering to Russian forces in Kursk Oblast.

Overall, the Russian forces have suffered over 775,000 personnel killed or wounded in over 1,000 days of fighting.

Five months after their shock offensive into Russia, Ukrainian troops are bloodied by daily combat losses and demoralized by the rising risk of defeat in Kursk. Some want to stay

After a surprise offensive earlier this year, Ukraine’s forces have lost about half the territory seized in Russia’s Kursk region and may lose the rest in a matter of months, according to US officials,

Exhausted and demoralised Ukrainian troops risk losing much of the territory in Russia's Kursk Oblast that they captured during the lightning-fast August offensive. Source: Associated Press, citing seven Ukrainian soldiers and commanders who spoke on condition of anonymity about the situation on the front line Details: The publication writes that a significant number of Ukrainian units are in a state of exhaustion.

Ukrainian forces are at risk of losing control over the territories gained in the Kursk region, which could weaken the entire frontline. Ukraine has already lost 40 per cent of the land acquired in Russia.

Five months after their shock offensive into Russia, Ukrainian troops are bloodied and demoralised in the battle for Russia's Kursk region.View on euronews