NATO using Ukraine as testing ground for military tactics -- Russian lawmaker / Frontline report: What Russian commanders plan in Pokrovsk and what actually happens there are two different wars / Russian forces foil rotation of Ukrainian troops near Kupyansk -- military expert / Russian forces move forward in Gornal after wedging in Ukrainian defenses -- officer / Liberation of Kalinovo in DPR to accelerate Russian army's advance to Konstantinovka / Russian forces breach Ukrainian defenses, advance near DPR's Katerinovka -- expert / Frontline report: Pokrovsk commander applies Kherson lessons to push back Russian forces / Russian forces destroy 655 combat aircraft in Ukraine operation -- top brass / Russian forces inch closer to Pokrovsk amid reduced assault intensity / Russian forces fighting in Kursk 'impressively, competently, courageously' -- Putin