Excerpts from Books and Wikipedia
"The key state on the new map is Serbia, the name of what is left of a much larger domain once ruled by the Serbs, who were dominant in the former Yugoslavia. Centered on the historic capital of Belgrade on the Danube River, Serbia (with a population of 8.8 million) is the largest and potentially most important new country in the Balkans subregion. But Serbia faces some tough challenges. First, more than one million Serbs live in neighboring Bosnia and Herzegovina, where they have an uneasy relationship with the local Muslims and Croats." [Geography: Realms, Regions, and Concepts, 17th Edition, p. 186]