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.

Ukrainian President Volodymyr Zelensky said Russia has deployed nearly 50,000 troops to Kursk, the southern Russian region where Kyiv launched its surprise counteroffensive in the summer.

Ukraine has lost over 40% 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 counter-assaults, a senior Ukrainian military source said.

Russia has amassed a large force of tens of thousands — including recently arrived North Korean troops — to carry out an assault on the Ukrainian positions in Russia’s Kursk region expected in the coming days,

Ukraine lost more than 40% of the territory in the Kursk region it controlled during a surprise operation launched in August. This happened amid waves of counterattacks organized by Russian troops, reports Reuters.

Of the territory Ukraine captured in a surprise attack in Russia's Kursk oblast in August, it has already lost 40 percent again. An army source told the Reuters news agency. “At the maximum, we had control of 1,

Ukraine has lost more than 40 per cent of the territory in Russia’s Kursk region that it seized in August, a senior Ukrainian military source said. Russia had deployed 59,000 troops to the region since the surprise invasion by Kyiv’s forces,