"This is all shows that you can't fight something like Russia with professional army only if you are a country of only 44m people."
is correct, if the implication is something like "Only with a mass draft can a nation of 44 million fight against a nation 143 million people."
I think we all understand that the situation in Ukraine is very difficult right now.
But... When you look at GDP it is $1,578B[0] vs $112B[1] - e.g. more than 12x. And this is with an extremely heavily sanctioned Russia. In terms of industrial manufacturing and technologies, the difference is even more shocking.
That's why this full on fight is bound to bring only suffering, misery and an even greater defeat. Real shame though - I have been to Uzhhorod and Lvov and those are great places with great people. Their leaders though...
[1] And a few more countries with geopolitical motivations.
Ukraine cannot switch over to a wartime economy, since that would quickly ruin the country. Only a small percentage of Ukrainian males are currently under arms (I estimate 300.000 or less).
Ukraine currently has the backing of most Western nations, but it's likely support for the war sag if prices and economic conditions worsen in the U.S. and Europe.
At best they have some 8M males between 18-54 for military duty who would actually fight for Ukraine. Still a lot but twice less than what you posted.
https://demodexio.substack.com/p/if-a-western-nation-joins-t...
A 300k active service military would be of course nothing to scoff at, especially with a lot of long range weapons.
But what we see in Ukraine is they had biggest army in Europe, and they also wanted to go mostly professional, but their core force, the most well trained soldier took an enormous hit, and is melting away.
Soldiers whom they spent years preparing are still humans, and are dying to artillery, air strikes, and zerg rushes of Russian "disposables" (draftees, Wanger mercenaries, and LPR/DPR levy.) These highly trained soldiers are not trading their lives meaningfully when they sit in trenches, and can't attack because the frontline is so stretched out, and manpower is drained for menial tasks.
This is all shows that you can't fight something like Russia with professional army only if you are a country of only 44m people.
A degree of differentiation in between career warriors who will spend a decade or more in the military vs. somebody who will go for a 2-3 year contract, and reservists with minimal training is absolutely essential.
Israel maintains a 1 to 3 split in between professional soldiers, and the good part of their reserve (people who regularly train, fit, and had good scores in tests.) The ratio is way bigger on the paper though.
We now see that Russia has difficulties getting draftees to fight abroad, so it is hard to imagine that Poland is at any particular risk right now.