It's almost like slavic people are by definition groups of people who speak slavic languages (which by the way doesn't make someone russian and as mentioned, not all east european nations are slavic).
North Macedonia is a fake country precisely because ancient Macedonians were Greeks but this bizarre Tito-made Macedonia is filled with bulgarians who, according to turks, are turks. This is why greeks complain about North Macedonia stealing their name and history and turks claim it belongs to them because they have this retarded Grey Wolves ideology.
en.wikipedia.org
Nice way to exclude the greeks.
Сећам се када сте починили геноцид у мојој земљи