The Treaty of London (1913) was an agreement that ended the First Balkan War, which involved the countries of the Balkan League—comprising Serbia, Greece, Bulgaria, and Montenegro—against the Ottoman Empire. The treaty aimed to establish peace and redraw borders in the Balkans, granting significant territories to the victorious states. The treaty also set the stage for further conflicts, particularly between Bulgaria and its former allies over the division of the newly acquired lands. This tension contributed to the outbreak of the Second Balkan War later in 1913, highlighting the fragile nature of the agreements made in London.