Worst outcome of WWII with 1930 POD?

What would the worst outcome of WWII be with a POD no earlier than 1930?

Worst being either most people dying, or best outcome for Germany and Japan. Or both.
 
Actually I'd go with a different version of worst: the USSR takes a different military tactic and decides to postpone the Purge until after its armies trounce the Nazis, leading to Tuchachevsky and Blyker and their ilk preparing, executing, and organizing a massive, successful defeat first of Barbarossa and second overrunning much of Central and Eastern Europe in a staggered, unfolding process with an army that's the most modern and powerful of its time, this before the USA even gets to its Midway point in the Pacific War. Instead of cocky, hubristically stupid Germany, or cocky, idiotic US hubris, the world sees the already-messianic and brutal Soviet regime replace the Nazi enemy with a new enemy that reclaims almost all of its 1914 borders and is a nearly-unstoppable force, militarily speaking.
 
More likely than Nazis with nukes - Nazis go gung-ho with chemical weapons (most likely against the Soviet Union first), UK might add a generous helping of Anthrax and other fun stuff in retaliation (perhaps if some nutcase Nazi drops a load of Sarin on London?).

Europe descends to a particularly unpleasant level of hell.
 
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