You're framing it as if it's China vs Belgium but Russia has about three times the population of Ukraine. And literally millions of Russian men already fled Russia rather than be conscripted.
Looking at current ratio of Russian and Ukrainian losses, having three times the soldiers is not going to be enough.
Not millions. That number is probably closer to 800k.
Still a lot, esp. you consider the primary draftable age groups (e.g. 18-30), and that not all males in that group would be military worthy, i.e. medical or mental disabilities, etc.
Also a big deal if you consider that most of them are the wealthier, smarter, more mobile parts of the population, which will exacerbate the brain-drain and impact the economy. A lot of those guys aren't gonna go back anytime soon, or at all.
> Also a big deal if you consider that most of them are the wealthier, smarter, more mobile parts of the population, which will exacerbate the brain-drain and impact the economy.
This a post-Covid era. Everything that is "smart and mobile" is also remote. Which means that physical relocation doesn't exactly imply brain drain, especially given that wealthier destinations such as the US or some parts of Europe are harder to reach then ever.
Looking at current ratio of Russian and Ukrainian losses, having three times the soldiers is not going to be enough.