Britannica Sources used in this answer

Which countries formed the Balkan League in 1912?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

The Balkan League, formed in 1912, consisted of four nations: Bulgaria, Serbia, Greece, and Montenegro.1

This alliance was established at the instigation of Russia with the primary goal of expelling the Ottoman Empire from the Balkans. While the league successfully fought the First Balkan War, it ultimately disintegrated due to internal conflicts regarding the division of territory in Macedonia, which led to the Second Balkan War in 1913.1