The gray zone in the Kharkiv region is expanding following the increased activity of Russian troops along the border with the Russian Federation. Ivan Tymochko, the head of the Council of Reservists of the Ground Forces explained what kind of territory it is and how it emerged. “Indeed, after the enemy retreated during the Kharkiv campaign (in the fall of 2022), but it did not perfectly halt along the border line. Nevertheless, artillery battles were ongoing, and clashes with sabotage and reconnaissance groups were constant, resulting in the formation of such a line within Russia’s territory, …