Kata Kunci Pencarian:
- Perpecahan Tito-Stalin
- Yugoslavia Federal Demokratis
- Hubungan Bulgaria dengan Tiongkok
- Perang Dunia I
- Negara anggota Perserikatan Bangsa-Bangsa
- Persekutuan Austria-Serbia 1881
- Perang Dunia II
- Rumpun suku bangsa Slavia
- Blok Sekutu dalam Perang Dunia II
- Indonesia
- Bulgaria–Yugoslavia relations
- Albania–Yugoslavia relations
- Bulgaria–Croatia relations
- Bulgaria–North Macedonia relations
- Bulgaria–Kosovo relations
- Bulgaria–Serbia relations
- Greece–Yugoslavia relations
- Bulgaria–United States relations
- Bled agreement (1947)
- Balkan Federation
