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.

Ukraine has now lost more than 40% of the territory of Kursk Oblast, which it has controlled since August, as a result of Russian counterattacks, says a Reuters source in the General Staff of the Ukrainian Armed Forces.

Faced with waves of counterattacks from nearly 60,000 Russian troops, Ukraine has lost more than 40% of the territory it once controlled in its August invasion of Kursk, Reuters reported, citing a member of the Ukrainian General Staff.

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.

Ukraine has lost over 40 per cent of the territory it previously gained in Russia's Kursk Oblast due to Russian counterattacks, Reuters reported on Nov. 23, citing a source in Ukraine's General Staff.

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.