With a PoD no earlier than 1917, have relations between the United States and Soviet Union be no worse than polite while both parties are under no immediate existential threat (i.e. Nazi Germany).
Here's the catch: Both must be at least vaguely similar to OTL. While you can significantly alter the landscape of American politics, it cannot become a communist state or anything like that. Similarly, the USSR may undergo signifigant reform, but it still must be recognizable as the Soviet Union.
Here's the catch: Both must be at least vaguely similar to OTL. While you can significantly alter the landscape of American politics, it cannot become a communist state or anything like that. Similarly, the USSR may undergo signifigant reform, but it still must be recognizable as the Soviet Union.