Radmanović is a member of both the Alliance of Independent Social Democrats and of the Academy of Sciences and Arts of the Republika Srpska as well.

[1] Radmanović was born on 5 February 1949 in Gračanica, FPR Yugoslavia, present-day Bosnia and Herzegovina.

[2] During and after the Bosnian War, from 1991 to 1998, Radmanović was the first director of the Archives of Republika Srpska, and also chaired the executive board of the Banja Luka Municipal Assembly for two years.

He also briefly served as Minister of Administration and Local Self-Government of Republika Srpska in the government of Milorad Dodik from February to November 2006.

[3] In 2008, Radmanović was awarded the Medal of Pushkin for the development and expansion of international cultural cooperation between Bosnia and Herzegovina and the Russian Federation.