The Ukrainian operation in the Kursk region and potential further Ukrainian invasions will force the Kremlin to reallocate resources to defend the state border, sacrificing the effectiveness of military actions in Ukraine, analyzes the Institute for the Study of War (ISW). Before the invasion of the Kursk region, Russian authorities considered their state border a “dormant front,” which allowed them greater flexibility in accumulating and using resources in Ukraine. Now they will be forced to reconsider their stance, spending manpower and equipment on border defense. This could impose long-ter…