Ukraine's incursion into Russia's Kursk Oblast that started on 6 August marks the first invasion of Russia since World War II. Ukrainian units reportedly drawn from four brigades have been broadening their bridgehead for over a week, with Ukraine's Commander-in-Chief Oleksandr Syrskyi earlier claiming that 1,000 square kilometers of territory inside Russia had been seized.
Russia began relocating troops from Ukraine to fend off the Kursk offensive
However, the number of the relocated troops is relatively small so far.