The Union of Bulgarians in Transnistria, also calling itself the Historical and Human Rights Center of Bulgaria, is a non-governmental organization based in Transnistria whose leader is Alene Nikolayev, an ethnic Bulgarian born in Transnistria. The union is composed of ethnic Bulgarians. Of the 35 nationalities represented in Transnistria, ethnic Bulgarians represent less than 2 percent.[1]