Geolocated footage shows Russia has advanced to the southeast of Korenevo in recent days, the ISW said.

An unnamed senior military source in Kyiv‘s General Staff told Reuters in an article published on Saturday that Ukraine had lost more than 40 percent of the territory it controlled in Kursk. At its peak, Ukrainian forces controlled roughly 531 square miles of territory, the source said, adding that this has now dropped to approximately 309 square miles.