I saw a claim from a Canadian vet in Kyiv that 40,000 foreign fighters were already in Kyiv. The Canadian was part of a 500-man exclusively Canadian urban battalion. There was also a report on BBC that Russia had summoned foreign ambassadors in Moscow to complain about foreign volunteers traveling to Ukraine to fight against Russia [1].
I've also been on Telegram channels helping American vets organize, fund their flights to Poland, equip, and then drive them to the Ukrainian border.
These are highly motivated well equipped men - many are veterans. Assuming these data points are accurate, then Russia's odds of victory are going down by the day as more western men and supplies enter Ukraine each day than Russian men and supplies.
[1] https://www.aa.com.tr/en/europe/west-sends-mercenaries-to-fi...