(1912–13) Alliance of Bulgaria, Serbia, Greece, and Montenegro, which fought the first Balkan War against the Ottoman empire.
Ostensibly created to limit Austrian power in the Balkans, the league was actually formed at the instigation of Russia to expel the Turks from the Balkans. The league disintegrated when its members quarreled over the division of territorial spoils after their victory in the first Balkan War.