I have never met a Belarussian in Sweden
Possibly because they learn Swedish and do not ask Belarussian to be official language, like some Russians here in Latvia.
It's amazing actually - one day someone asked me directions in Russian - how to get to the bus - I answered him in Latvian - he did not understand ANYTHING.
How the hell you can live in a country and do not know local language that is spoken by majority?