With Russian airpower still very much embroiled in the war in Ukraine, the country's Combat Application Training Center aggressor squadron recently took delivery of its first Su-35S Flankers, the most advanced fighter jets in frontline service with the Russian Aerospace Forces, or VKS. Experiences from the current conflict in Ukraine suggest that overhauling the air combat training capabilities of the VKS is badly needed, and the Su-35S might now be expected to help achieve that goal.