And to tell you there is no nation Palestinians
Palestine was a region where many different groups of people lived. They had they own national identity and I assure you it was not Palestinian.Even Jews in that region have been called Palestinians because of the name of this region where they lived.
Same thing is with Bosnia. There is no Bosnian nation. You have South Slavs which are Serbs and Croats. Under Turkish rule some have converted to Islam and became Bosnian muslims but their backgroud is still Serb or Croat.
When Serb from Bosnia comes to Serbia he can be called Bosnian just because name of the region where he resides. Serb from Dalmatia for example is called Dalmatinac, or Serb from Belgrade Beogradjanin.
Arabs had to create this new imaginary nation in modern times to take control over beautiful Israel from the heroic Jews.