Belarus (Belarusian and Russian (both Cyrillic): Беларусь, Belarusian Latin: Biełaruś, Russian Latin: Belarus) is a mentioned-only country in Euro Truck Simulator 2: Beyond the Baltic Sea. Its capital city is Minsk.
The country itself doesn't appear physically in-game. However, there are road signs in Lithuania mentioning the Belarusian cities Grodno and Minsk. This is only visible in Euro Truck Simulator 2: Beyond the Baltic Sea DLC.
The country borders Latvia and Lithuania to the north, Russia to the east, Ukraine to the south and Poland to the west.
Currently, SCS didn't have plans to include Belarus in the game, particularly due to its support of Russia illegally invading Ukraine through force.