- The loss of Izyum dooms the initial Russian campaign plan for this phase of the war and ensures that Russian advances toward Bakhmut or around Donetsk City cannot be decisive (if they occur at all).
- Russia likely lacks sufficient reserve forces to complete the formation of a new defensive line along the Oskil River.
- Russian President Vladimir Putin risks making a common but deadly mistake by waiting too long to order reinforcements to the Luhansk line, thereby compromising the defense of Kherson or ending offensive operations around Bakhmut and Donetsk City without getting troops into position to defend against continuing Ukrainian attacks in Luhansk in time.
ISW Russian Offensive Campaign Assessment, September 11
