
Russian troops have been taking back territory in the Kursk region with steady gains, the Russian region that Ukraine attacked in 2024. This is because the United States is trying to get Russia to agree to a ceasefire amid the three-year-old conflict.
Nick Eardley, a BBC-verified one, has been studying this situation.
Verification: Benedict Garman, Kayleen Devlin, Thomas Spencer, Yaroslava Kiryukhina and Fridon Kiria
Motion graphics: Jacqueline Galvin