Ukrainian troops have made marginal gains in Russia's Belgorod region, it has been reported, as a map shows the state of play along the front line. Geolocated footage on Friday showed small advances northwest of Belgorod city which deliver a much-needed boost to Kyiv's morale in a week in which a Black Sea deal proposed pausing strikes on energy infrastructure.

Russian troops fighting in Kursk have reached the Ukraine border area, Moscow claimed on Friday. The Kremlin’s defence ministry said its forces recaptured the village of Gogolevka, which is just four miles from the Ukrainian border.

At the height of the campaign, Ukrainian forces controlled some 500 square miles of Russian territory. Now they hold just a small sliver of land along the border.