I'm not well versed in Interwar Soviet Doctrine, but I would like to know some of the effects in WWII if the Soviets focused on static fortifications like Czechoslovakia and France, instead of their Deep Battle Doctrine, and how this could be achieved.
Perhaps a focus on static fortifications could hamper the beginnings of Operation Barbarossa, or it could allow the Germans to have their decisive victory close to the border. Any thoughts?