The Serb members of parliament, consisting mainly of the Serb Democratic Party members, abandoned the central parliament in Sarajevo, and formed the Assembly of the Serb People of Bosnia and Herzegovina on 24 October 1991, which marked the end of the three-ethnic coalition that governed after the elections in 1990. This Assembly established the Serbian Republic of Bosnia and Herzegovina in part of the territory of Bosnia and Herzegovina on 9 January 1992. It was renamed Republika Srpska in August 1992. On 18 November 1991, the party branch in Bosnia and Herzegovina of the ruling party in the Republic of Croatia, the Croatian Democratic Union (HDZ), proclaimed the existence of the Croatian Community of Herzeg-Bosnia in a separate part of the territory of Bosnia and Herzegovina with the Croatian Defence Council (HVO) as its military branch. It went unrecognized by the Government of Bosnia and Herzegovina, which declared it illegal.