Let's assume that a non-Nazi or NINO (Nazi In Name Only) Germany arises in the interwar period, and a WWII gets fought between the USSR and the alliance of Britain, France, Germany, and Italy, with the USA providing generous support to the European bloc but staying neutral.
Austria and the Sudetenland get settled just like OTL, Czechia remains independent, Germany recovers Danzig, West Prussia, and Upper Silesia after a German-Polish war, and turns into a sufficiently satisfied power. Italy fights and wins (with some effort) a war with Yugoslavia, imposes a settlement much like OTL 1941, and turns into a sufficiently satisfied power. A general detente between Britain, France, Germany, and Italy ensues, while Euro-Soviet tensions keep growing.
The military build-up programs of the great powers continue (for Germany to an economically-sustainable pace, and for Italy in a way that eventually irons out its OTL military deficiences) until sometime between 1942-43 and 1945-46, Euro-Soviet tensions explode in a general war, which swiftly expands to a front running from Northern Europe to Central Asia. The USA provides at least as much Lend-Lease to the European alliance as they did IOTL, but stays neutral.
The purpose of this thread is to discuss the strategic, technological, and political issues of this WWII and how they would differ from the war we know. I kindly ask every poster to exercise their suspension of disbelief if need be, and do not derail the discussion by arguing about whether such a war would occur in the first place.
A poll is also provided to let you vote on what you deem the most likely outcome:
Total European victory: European Russia is overrun by European forces, or is crippled by European nukes, the USSR surrenders.
Partial European victory: the USSR is forced to a Brest-Litovsk-style peace, but its regime and great power status survive, the Iron Curtain is on a 1992-like border.
Draw: the war ends with restoration of the pre-war borders and spheres of influence, the Iron Curtain is on the Soviet border.
Partial Soviet victory: the USSR keeps control of Eastern Europe, the European powers stand unconquered, the Iron Curtain is someplace between the pre-war Soviet and German-Czech-Italian borders.
Total Soviet victory: the USSR conquers continental Europe, the Iron Curtain is at the English Channel.