I have to give the soviets the win on this one. Their spying was very effective. All that spying let them get the bomb PDQ.
I have to give the soviets the win on this one. Their spying was very effective. All that spying let them get the bomb PDQ.
The worse but more explicable answer is that it's stubbornness and pride on Putin's part in his national aspirations for Russia, for his external image, not his internal one.
The bomb itself is trivial once you have enough uranium or plutonium.
The soviets under Stalin played the allies _hard_ during World War 2.
Why would the Soviets want a longer war?
The Morgenthau plan implied a harsh post-war settlement for Germany, and at the time was viewed as effectively inspiring the Germans to fight on rather than capitulate or revolt against the failing Nazi regime.