I am Belarussian. Thats not true - yes, theyre quite similair, but not nearly anywhere close a dialect. By the same logic Ukranian is a dialect, too, and Polish would be at least a mutually intelligable sister language. In fact, Belarussian and Polish are both similair to Russian and to each other, but are all separate languages. Belarussian is more similair to Russian than to Polish, but more similair to Ukranian than to Russian. Belarussian nationalism is on the rise and was born 100 years ago. Slavic languages are all quite closely related, relative to other language families, because they only split into West, East, and South Slavic 1,000 years ago.