Belarusian is one of two official languages of the Eastern European country of Belarus, the other being Russian. While Belarus is the native language for around half of Belarus' 9.4 million residents, it isn't the most common language in the country. That remains Russian, with about 70% of the population using it.
The Belarusian language has two main dialects, the North-Eastern and the South-Western. However, the language is officially in danger and has been identified by UNESCO as a vulnerable language. It is estimated the language is spoken by around four million people worldwide.
The language has a high level of crossover with other East Slavic languages, most notably Ukrainian and Russian.