Republika Srpska contains the administrative territorial entity Banja Luka Region
Republika Srpska (Serbian Cyrillic: Република Српска, pronounced [repǔblika sr̩̂pskaː] (listen); also known as Republic of Srpska) is one of the two entities of Bosnia and Herzegovina, the other being the Federation of Bosnia and Herzegovina. It is located in the north and east of the country. Its largest city and administrative centre is Banja Luka, lying on the Vrbas river.
Republika Srpska was formed in 1992 at the outset of the Bosnian War with the stated intent to safeguard the interests of the Serbs of Bosnia and Herzegovina. The war saw the expulsion of the vast majority of Croats and Bosniaks from the territory claimed by Republika Srpska and an inflow of Serbs expelled from Federation of Bosnia and Herzegovina. Following the Dayton Agreement of 1995, Republika Srpska was recognised as an entity within Bosnia and Herzegovina. Today most of Bosnia and Herzegovina's Serb population lives in Republika Srpska. 
Republika Srpska is a parliamentary-style government, with the National Assembly holding legislative power within the entity. Republika Srpska is relatively centralised, although it is split into 64 municipalities called opštine. The legislature holds 83 seats, and the current session is the tenth since its founding.
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