On this day in 1913, the Treaty of Bucharest was signed by delegates of #Bulgaria, #Romania, #Serbia, #Montenegro, and #Greece, ending the Second Balkan War. This conflict was another example of Balkan instability due to unsolved border disputes and Great Power politics. After centuries of presence of the #OttomanEmpire in the Balkans, it began to weaken in 19th century. The Balkan nations were also aware of this. In 1912 four Balkan kingdoms - Greece, Bulgaria, Serbia, and Montenegro - created the Balkan League to liberate its territories.