Suppose Stalin died, maybe off a horse when practicing for victory parade. A crazy (possibly from Puorto Rico) murders Truman before the successsion act changes and Secretary of State Marshall becomes President.
Suppose Stalin died, maybe off a horse when practicing for victory parade. A crazy (possibly from Puorto Rico) murders Truman before the successsion act changes and Secretary of State Marshall becomes President.
I'm afraid that it's not terribly likely, TBH: it probably would have been difficult to avoid a Cold War even with a Tsarist Russia, let alone a Communist Russia like OTL's Soviet Union, without some radical changes in the U.S., after about 1905 or so.