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Stalin finds out about Operation Barbarossa in mid August 1939 and invades Germany on July, 25, 1940, this extra time to invade allows the Soviet Union to control all of Germany, Alice Lorraine, the Balkans and the buffer countries (Belgium, Luxembourg ETC). The Soviets also control all of Eurasia. Iceland and Greenland are the seat of the Swedish Government in exile, which basically combined with the local governments

The American Nuclear program is set back several years when a train full of major scientists is derailed, the soviets already had there own nuclear program, but it suffered a similar fate.

The Soviets are the first to liberate Japan, and most of northern China, Mao runs a Soviet much smaller Communist Republic of China, he has more freedom than other Soviet puppets, but there will never be a Beijing Moscow Split. Japan is a socialist parliamentary democracy, but the soviets will take over if they don't like the electoral votes. The soviets also control most of America controls the Pacific Islands, and southern China.

in the Mid 50s WW3 breaks out, nuclear weapons are still 3-4 years away for both parties, nukes will be developed at some point during the war, around the same time for both sides, neither knows the other has nuclear research (the soviets practiced an American policy with scientists).

Spain, Portugal and Italy (which left the war early and stayed fascist) form the Anti Soviet Front, opposing both NATO and the Warsaw Pact, they control much of West Africa.

Cuban goes communist in 1947, during WW2, making it impossible for the USA to stop it, it swiftly industrializes and backs a wave of revolutions in central America in 1949, swiftly industrializing the Socialist Federation, and militarizing it, this group includes Mexico.
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