On February 18, 1993, Croatian authorities signed the Daruvar Agreement with local Serb leaders in Western Slavonia. The aim of the secret agreement was normalizing life for local populations near the frontline. However, authorities in Knin learned of this and arrested the Serb leaders responsible. In June 1993, Serbs began voting in a referendum on merging Krajina territory with Republika Srpska. Milan Martić, acting as the RSK interior minister, advocated a merger of the "two Serbian states as the first stage in the establishment of a state of all Serbs" in his April 3 letter to the Assembly of the Republika Srpska. On January 21, 1994, Martić stated that he would "speed up the process of unification and pass on the baton to all Serbian leader Slobodan Milošević" if elected president of the RSK". "Efforts to unify the Croatian Krajina and the Bosnian Krajina continued throughout 1992 until 1995. The evidence shows that the RSK leadership sought an alliance, and eventually unification, with the RS in BiH and that Milan Martić was in favour of such unification. A letter dated April 3, 1993 from, inter alia, Milan Martic as minister of the interior to the Assembly of the RS, written on behalf of "the Serbs from the RSK", advocates a joinder of the "two Serbian states as the first stage in the establishment of a state of all Serbs". Moreover, in this regard, the Trial Chamber recalls the evidence concerning operation Koridor 92. On January 21, 1994, during the election campaign for the RSK presidential elections, Milan Martić stated that he would "speed up the process of unification" and "pass on the baton to our all Serbian leader Slobodan Milosevic.""</ref> These intentions were countered by the United Nations Security Council (UNSC) Resolution 871 in October 1993, when the UNSC affirmed for the first time that the United Nations Protected Areas, i.e. the RSK held areas, were an integral part of the Republic of Croatia.