I think that a war with the allies and russia would have been a blood bath but i think the allies would have won. maybe a pyric victory but won. The Russian airforce was huge but they had some poor designs. The allies airforce was comprable but also more sophisticated covering all fields of an airwar. The allies would have introduced better tanks for i hope they would assume the sherman wouldn't stand a chance. Plus the allies could fight them on 2 fronts. Allied forces could have mad landings on the pacific coast of Russia and also they had airbases in Japan from which to bomb from. Also don't forget we had the bomb and they didn't too!