How many people could a Greater Russia sustain?

[futurist]

If Russia would have avoided Bolshevism in 1917, become a developed country by the end of the 20th century, and kept all of its pre-war territory other than Poland and perhaps Finland, how many people could it (Russia) sustain right now--with modern technology and everything?

Note: I am not asking how many people Russia would have actually had right now in this scenario (though please feel free to answer this question as well); rather, I am asking how many people Russia could theoretically sustain right now without any major problems in this scenario. In other words, I am asking about Russia's current carrying capacity in this scenario.

[steve59]

Jan 8, 2019 0:11:20 GMT futurist said:

If Russia would have avoided Bolshevism in 1917, become a developed country by the end of the 20th century, and kept all of its pre-war territory other than Poland and perhaps Finland, how many people could it (Russia) sustain right now--with modern technology and everything?

Note: I am not asking how many people Russia would have actually had right now in this scenario (though please feel free to answer this question as well); rather, I am asking how many people Russia could theoretically sustain right now without any major problems in this scenario. In other words, I am asking about Russia's current carrying capacity in this scenario.

  Quite a lot.  Demographic tendencies were suggesting it could have as many people as the rest of Europe combined by mid-century if not before.  This may not be sustainable but you could probably get about say 350M or so, although this would require maintaining control of at least the Ukraine and central Asia and would probably need to be a net food importer even with a much better management of agriculture than under the Soviets.