Russia's population is 140 million. They're not going to run out of people. 17% of those or about 24 million are fighting age males (18-44). If you really need to you can definitely recruit 15-60 and woman.
Not sure if this is what you meant by logistics.
If you're thinking about supplying and maintaining their physical presence in Ukraine it doesn't look like that's a problem either.
They're also still exporting weapons though significantly less than they used to export.
Maybe they can't sustain 10 years of war with the west continuing or increasing their level of support, assuming Ukraine can, but they are nowhere near being forced to stop [the] war.
Population alone and artillery alone are the ingredients of logistics, not logistics itself.
The failure of the initial 3-days invasion was a demonstration that the « great Russian army », even with the support of Wagner and Tchetchenia, was unable to plan, execute and sustain a flash attack.
Yes, they may improve in the meantime. But that takes years of discipline and continuous training. So while that’s an option for them, that’s also a weakness that can be decisive.
