Earlier quoted context omitted.
They are also getting fresh soldiers. 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…
Eventually the question becomes "if these guest fighters are successful, at what point do they consider going north through the contested border and attacking Russian (or, more likely, Belurussian) cities?"
Not sure what to make of it, but people are definitely thinking about this.