Would it be possible to get the USSR and the USA to become long term allies in global politics (without having a communist USA)? I doubt the US could play well with Stalin for very long, but lots of things can happen to Stalin. Obviously, if the US and the USSR are the only majr powers they will be in competition, is there any chane of a third power arising to challenge them? Perhaps a stronger, more hostile British Empire or united Europe? Or is this ASB?