Another idea that struck me is how all the Soviet top brass were absolute workhorses who squeezed every living hour out of the day, to the point of mental and physical exhaustion. Stalin himself seemed to sleep from 4am to the late morning, which I found curious. Overall there are clear insights on how they won the war and lifted the Soviet empire, other than through despicable actions.
Maybe I'm misinterpreting it but this reads to me like 'the soviet leadership worked really hard and that won the war'.