At the end of 1995., small eastern rump of Serb District of Eastern Slavonia, Baranja and Western Sirmium was all that was left after the fall and dissolution of Republic of Sebian Krajina, serb rebel state within the internationaly recognized borders of Republic of Croatia, which came into existence after armed rebellion and open military intervention of Yugoslav People's Army occupied one-third of Croatia. Military succeses of Croatian army during the spring and summer of 1995. caused forementioned fall of RSK, and paved the way for peacefull reintegration of its remaining teritorry into Croatia. In november 1995., just before the signing of Dayton Agreement which end the wars in both Bosnia and Croatia, croatian government and local Serb rebels signed Erdut Agreement which resulted in the implementation of United Nations peacekeeping force midway in january 1996., after which it's Transitional administration (UNTAES) sized control from rebel Serbs in that area.Transitional administration thus started a long proces of reintegration of Eastern Slavonia, Baranja and Western Sirmium back to croatian control. Proces started with the general demilitarization of the District, after which the Transitional police forces were established to succour the area and to keep law and order in check. Prolonged reintegration of monetary, economic, transport, health, social and school system followed. In march of 1997. the area was declared ready for local croatian elections for new municipal and city councils, after which illegal institutions of rebel Serbes ceased to exist. Finally, at january 15th 1998. entire territory was succesfully reintegrated into the Republic of Croatia, and Transitional administration thus succesfully ended it's mission. It is often heard that UNTAES mission was one of the most succesfull United Nations' missions of all time. The long process of returning of croatian refugees soon followed, acompanied with even longer proces of reconciliation and forgiveness between croatian and serbian comunnities within the Danubian region.