As far as I know from my mother's side I'm from Kosovo. From my father's side I am from the south of Albania. Not having met the guy and my mother only having little info on the matter as well doesn't help a great deal.
Nevertheless...
23andme says:
European - 98.9
98.7 Balkan
0.02 Broadly Southern European
0.01 Broadly European
Western Asian & North African - 0.2
Western Asian 0.2
South Asian - 0.1
Broadly South Asian 0.1
East Asian & Native American - 0.1
Siberian 0.1
Unassigned - 0.7
MyHeritage (uploaded 23andme raw data) says:
Europe - 100
South Europe - Greek 85.6
Eastern Europe - Balkan 14.4
That having been said...
The Balkans is a mix. Any way you slice it, over the centuries we have been interacting with one another much more than history leads us to believe. Feelings of nationalistic pride are all fine and good but when ultimately we have very little that differs us from one another from a genetic standpoint, it only comes down to love for the land between the borders in which we were born. That is the very definition of nationalistic pride and has nothing to do with genetics. It's a self serving idea we've created ourselves. For that matter, not just us, but the entire world.
But, since we're so similar genetically, maybe we shouldn't be so angry at one another