WI - Nazi Germany and Soviet Russia both defeated in WW2 (Post-Barbarossa)
What-If both Nazi Germany and Soviet Russia lost WW2 and underwent post-war De-Nazification and De-Sovietisation respectively, the POD beginning after Operation Barbarossa (without use of Nuclear Weapons)?
While it would be a relatively more bloody affair compared to OTL and likely be met with stiff resistance by Soviet-sympathizers within the US/UK, am interested in how events would turn out if the Allies while still fighting the Nazis, either never backed or never fully-aided the Soviets and pursued a policy of replacing both regimes.