Those who were already working with companies from abroad have largely left. I’m wondering about those who were working with Russian orgs their entire lives, those people are a lot less mobile, they can’t speak other languages very well and usually feel like ‘nobody’s waiting for them out there.’

By the time USSR started to crumble KGB decided to embed spies and criminals into Western societies hiding them amongst a wave of refugees and economic migrants.

I would expect the same happening this time.