On the state border between Serbia and Bosnia and Herzegovina, between municipalities Priboj and Rudo, enclave Sastavci is located, with the area of approximately 400 ha. The enclave Sastavci is officially a part of the Bosnia and Herzegovina, but it is completely surrounded by Serbian territory. This Bosnian "island", at the territory of local community Sastavci, the village Međurečje, belongs to the Bosnian municipality Rudo, but it is under the administration of Serbian municipality Priboj. This border anomaly exists since Berlin's congress in 1878, when Austria-Hungarian got permission to occupy Bosnia and Herzegovina. This complicated shape of state border brings many problems to inhabitant’s enclave of Sastavci, and also to most villagers of municipality Priboj. They need to cross a state borders on their way to the center of municipality four times a day. The negotiation between Serbia and Bosnia and Herzegovina about this matter still haven't resulted with positive conclusion.