Greece–Yugoslavia relations
Greece–Yugoslavia relations (Greek: Σχέσεις Ελλάδας – Γιουγκοσλαβίας; Serbo-Croatian: Grčko-jugoslavenski odnosi, Грчко-југословенски односи; Slovene: Odnosi med Grčijo in Jugoslavijo; Macedonian: Односите Грција-Југославија) were historical foreign relations between Greece (Second Hellenic Republic, Kingdom of Greece and contemporary Third Republic) and now split-up Yugoslavia (both Kingdom of Yugoslavia or Socialist Federal Republic of Yugoslavia). Relations between Greece and independent South Slavic states (primarily Serbia) developed before the creation of Yugoslavia and played a prominent role during the Balkan Wars.
Source: Wikipedia — Greece–Yugoslavia relations (CC BY-SA 4.0)