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 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,

Russia fired an intercontinental ballistic missile during an attack on the Ukrainian city of Dnipro on Thursday, Kyiv's air force said, in what would be the first use in war of a weapon designed to deliver long-distance nuclear strikes.