Kyiv’s surprise incursion into Russia’s Kursk Oblast will likely force the Kremlin to reassess the levels of personnel and materiel it can commit to offensive operations in Ukraine, the Institute for the Study of War (ISW) said on Aug. 11. The ISW said Russia had treated its border with Ukraine as a “dormant frontline,” that clearly did not have the level of military resources required to defend against such an attack. “Russia’s prolonged treatment of the international border area as a dormant frontline is a strategic failure of imagination,” it said. The Ukrainian military launched a surprise…