Most plausible/simple Post-WWII PODs, with major effect on Contemporary History

Which events of the second half of the XX century were most likely to diverge. The simpler the change and the larger the long term change, the better. The first one that comest to mind is Stanislav Petrov and the faulty Soviet nuclear early-warning systems. Although I doubt that is as easy as people suspect beacause:

"Petrov later indicated that the influences on his decision included: that he was informed a U.S. strike would be all-out, so five missiles seemed an illogical start that the launch detection system was new and, in his view, not yet wholly trustworthy; and that ground radar failed to pick up corroborative evidence, even after minutes of delay."\


Anyways, any other suggestions?
 
These are what I came up with after 2 minutes of thinking.

WW3 breaking out in some capacity - Cuban missile crisis or further escalation of Korea or Vietnam are the most likely.

Berlin Wall not falling, or more generally, USSR not collapsing (maybe Gorbachev dies)

Computers remaining impractical or Bill gates never makes Windows sort of thing.

GFC becomes a global depression 1929-style.

Me not being born. (All right, that was a joke! But it would be a massive PoD for my life.)

- BNC
 
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