Balkan League
Encyclopedia
The Balkan League was an alliance formed by a series of bilateral treaties concluded in 1912 between the Balkan states of Bulgaria
Bulgaria
Bulgaria , officially the Republic of Bulgaria , is a parliamentary democracy within a unitary constitutional republic in Southeast Europe. The country borders Romania to the north, Serbia and Macedonia to the west, Greece and Turkey to the south, as well as the Black Sea to the east...

, Greece
Greece
Greece , officially the Hellenic Republic , and historically Hellas or the Republic of Greece in English, is a country in southeastern Europe....

, Montenegro
Montenegro
Montenegro Montenegrin: Crna Gora Црна Гора , meaning "Black Mountain") is a country located in Southeastern Europe. It has a coast on the Adriatic Sea to the south-west and is bordered by Croatia to the west, Bosnia and Herzegovina to the northwest, Serbia to the northeast and Albania to the...

 and Serbia
Serbia
Serbia , officially the Republic of Serbia , is a landlocked country located at the crossroads of Central and Southeast Europe, covering the southern part of the Carpathian basin and the central part of the Balkans...

, and directed against the Ottoman Empire
Ottoman Empire
The Ottoman EmpireIt was usually referred to as the "Ottoman Empire", the "Turkish Empire", the "Ottoman Caliphate" or more commonly "Turkey" by its contemporaries...

, which at the time still controlled much of the Balkan peninsula. The Balkans had been in a state of turmoil since the early 1900s, with years of guerrilla warfare in Macedonia
Macedonian Struggle
The Macedonian Struggle was a series of social, political, cultural and military conflicts between Greeks and Bulgarians in the region of Ottoman Macedonia between 1904 and 1908...

 followed by the Young Turk Revolution
Young Turk Revolution
The Young Turk Revolution of 1908 reversed the suspension of the Ottoman parliament by Sultan Abdul Hamid II, marking the onset of the Second Constitutional Era...

 and the protracted Bosnian Crisis
Bosnian crisis
The Bosnian Crisis of 1908–1909, also known as the Annexation crisis, or the First Balkan Crisis, erupted into public view when on 6 October 1908, Austria-Hungary announced the annexation of Bosnia and Herzegovina. Russia, the Ottoman Empire, Britain, Italy, Serbia, Montenegro, Germany and France...

. The outbreak of the Italo-Turkish War
Italo-Turkish War
The Italo-Turkish or Turco-Italian War was fought between the Ottoman Empire and the Kingdom of Italy from September 29, 1911 to October 18, 1912.As a result of this conflict, Italy was awarded the Ottoman provinces of Tripolitania, Fezzan, and...

 in 1911 had further weakened the Ottomans and emboldened the Balkan states. Under Russian
Russian Empire
The Russian Empire was a state that existed from 1721 until the Russian Revolution of 1917. It was the successor to the Tsardom of Russia and the predecessor of the Soviet Union...

 influence, Serbia
Kingdom of Serbia
The Kingdom of Serbia was created when Prince Milan Obrenović, ruler of the Principality of Serbia, was crowned King in 1882. The Principality of Serbia was ruled by the Karađorđevic dynasty from 1817 onwards . The Principality, suzerain to the Porte, had expelled all Ottoman troops by 1867, de...

 and Bulgaria
Kingdom of Bulgaria
The Kingdom of Bulgaria was established as an independent state when the Principality of Bulgaria, an Ottoman vassal, officially proclaimed itself independent on October 5, 1908 . This move also formalised the annexation of the Ottoman province of Eastern Rumelia, which had been under the control...

 settled their differences and signed an alliance, originally directed against Austria-Hungary
Austria-Hungary
Austria-Hungary , more formally known as the Kingdoms and Lands Represented in the Imperial Council and the Lands of the Holy Hungarian Crown of Saint Stephen, was a constitutional monarchic union between the crowns of the Austrian Empire and the Kingdom of Hungary in...

 on 13 March 1912, but by adding a secret chapter to it essentially redirected the alliance against the Ottoman Empire
Ottoman Empire
The Ottoman EmpireIt was usually referred to as the "Ottoman Empire", the "Turkish Empire", the "Ottoman Caliphate" or more commonly "Turkey" by its contemporaries...

. Serbia then signed a mutual alliance with Montenegro
Kingdom of Montenegro
The Kingdom of Montenegro was a monarchy in southeastern Europe during the tumultuous years on the Balkan Peninsula leading up to and during World War I. Legally it was a constitutional monarchy, but absolutist in practice...

, while Bulgaria did the same with Greece
Kingdom of Greece
The Kingdom of Greece was a state established in 1832 in the Convention of London by the Great Powers...

. The League was victorious in the First Balkan War
First Balkan War
The First Balkan War, which lasted from October 1912 to May 1913, pitted the Balkan League against the Ottoman Empire. The combined armies of the Balkan states overcame the numerically inferior and strategically disadvantaged Ottoman armies and achieved rapid success...

 which broke out in October 1912, where it successfully wrestled control of almost all Ottoman territories. Following this victory however, the old differences between the allies re-emerged over the division of the spoils, particularly Macedonia
Macedonia (region)
Macedonia is a geographical and historical region of the Balkan peninsula in southeastern Europe. Its boundaries have changed considerably over time, but nowadays the region is considered to include parts of five Balkan countries: Greece, the Republic of Macedonia, Bulgaria, Albania, Serbia, as...

, leading to the effective break-up of the League, and soon after, on 16 June 1913, Bulgaria attacked her erstwhile allies, beginning the Second Balkan War
Second Balkan War
The Second Balkan War was a conflict which broke out when Bulgaria, dissatisfied with its share of the spoils of the First Balkan War, attacked its former allies, Serbia and Greece, on 29 June 1913. Bulgaria had a prewar agreement about the division of region of Macedonia...

.

Background

After the Crimean War
Crimean War
The Crimean War was a conflict fought between the Russian Empire and an alliance of the French Empire, the British Empire, the Ottoman Empire, and the Kingdom of Sardinia. The war was part of a long-running contest between the major European powers for influence over territories of the declining...

 (1853–1856), Russia realized that the other Great Powers would spare no effort to prevent her from gaining access to the Mediterranean. As a consequence she started engineering an ambitious plan for indirect expansion through the creation of friendly and closely allied states under Russian patronage in the Balkan peninsula. Instrumental to this policy was the emerging Panslavic movement, which henceforth formed the basis of Russian foreign policy up until the end of the Tsar
Tsar
Tsar is a title used to designate certain European Slavic monarchs or supreme rulers. As a system of government in the Tsardom of Russia and Russian Empire, it is known as Tsarist autocracy, or Tsarism...

ist regime in 1917. Working in this direction, following the victorious Russo-Turkish War of 1877–1878, Russia managed to establish an autonomous Bulgarian state
Principality of Bulgaria
The Principality of Bulgaria was a self-governing entity created as a vassal of the Ottoman Empire by the Treaty of Berlin in 1878. The preliminary treaty of San Stefano between the Russian Empire and the Porte , on March 3, had originally proposed a significantly larger Bulgarian territory: its...

. Similarly, after saving Serbia from annihilation at the Turks' hands in 1876, Russia forced the Ottomans to accept a full independent and expanded Serbia two years later. However, although both states acknowledged Russian patronage and protection, their conflicted national aspirations soon led to a series of hostile actions before and after the short war
Serbo-Bulgarian War
The Serbo-Bulgarian War was a war between Serbia and Bulgaria that erupted on 14 November 1885 and lasted until 28 November the same year. Final peace was signed on 19 February 1886 in Bucharest...

 between them. With the antagonism of the European powers mounting, and smarting from her humiliation by the Austrians at the Bosnian crisis
Bosnian crisis
The Bosnian Crisis of 1908–1909, also known as the Annexation crisis, or the First Balkan Crisis, erupted into public view when on 6 October 1908, Austria-Hungary announced the annexation of Bosnia and Herzegovina. Russia, the Ottoman Empire, Britain, Italy, Serbia, Montenegro, Germany and France...

, Russia sought to gain the upper hand by creating a Russophile "Slavic block" in the Balkans, directed both against Austria-Hungary
Austria-Hungary
Austria-Hungary , more formally known as the Kingdoms and Lands Represented in the Imperial Council and the Lands of the Holy Hungarian Crown of Saint Stephen, was a constitutional monarchic union between the crowns of the Austrian Empire and the Kingdom of Hungary in...

 and the Ottomans. Consequently, Russian diplomacy began pressuring the two countries to reach a compromise and form an alliance.

Apart from the Russian pressure upon Bulgaria and Serbia, another issue that triggered the formation of the League was the Albanian Uprising
Battle of Deçiq
The Battle of Deçiq marked the beginning of the turning point for Albanian liberty. It was in this battle that the Flag of Albania was raised for the first time after 442 years of Ottoman occupation...

 of 1911. The timetable of the negotiations between Serbia and Bulgaria indicates that progress paralleled the success of the Albanian revolt. In May 1912 the Albanians succeeded in taking Skopje
Skopje
Skopje is the capital and largest city of the Republic of Macedonia with about a third of the total population. It is the country's political, cultural, economic, and academic centre...

 and continued towards Monastir, forcing the Ottomans to recognize the autonomy of Albania
Albania
Albania , officially known as the Republic of Albania , is a country in Southeastern Europe, in the Balkans region. It is bordered by Montenegro to the northwest, Kosovo to the northeast, the Republic of Macedonia to the east and Greece to the south and southeast. It has a coast on the Adriatic Sea...

 in June 1912. For Serbia this was considered catastrophic; after her hopes of expansion to the north were thwarted due to Austria's annexation of Bosnia and Herzegovina
Bosnia and Herzegovina
Bosnia and Herzegovina , sometimes called Bosnia-Herzegovina or simply Bosnia, is a country in Southern Europe, on the Balkan Peninsula. Bordered by Croatia to the north, west and south, Serbia to the east, and Montenegro to the southeast, Bosnia and Herzegovina is almost landlocked, except for the...

 in October 1908, Serbia now found the last direction of possible expansion, the south, also closing due to the creation of a Greater Albania
Greater Albania
Greater Albania or Ethnic Albania is an irredentist concept of lands outside the borders of the Republic of Albania that are considered part of a greater national homeland by most Albanians, based on the present-day or historical presence of Albanian populations in those areas...

. The Serbs now had to struggle against time to avoid the establishment of the Albanian state. On the other hand, Bulgaria used this Serbian anxiety in order to force Serbia to agree to significant concessions in regard to Vardar Macedonia
Vardar Macedonia
Vardar Macedonia is an area in the north of the Macedonia . The borders of the area are those of the Republic of Macedonia. It covers an area of...

. Thus the final agreement between the two countries stipulated that, in the event of a victorious war against the Ottomans, Bulgaria would receive all of Macedonia south of the Kriva Palanka
Kriva Palanka
Kriva Palanka is a town located in the northeastern part of the Republic of Macedonia. It has 14.558 inhabitants. The town of Kriva Palanka is the seat of Kriva Palanka Municipality which has almost 21.000 inhabitants....

-Ohrid
Ohrid
Ohrid is a city on the eastern shore of Lake Ohrid in the Republic of Macedonia. It has about 42,000 inhabitants, making it the seventh largest city in the country. The city is the seat of Ohrid Municipality. Ohrid is notable for having once had 365 churches, one for each day of the year and has...

 line. Serbia's expansion was to be to the north of this line, including Kosovo, and west to the Adriatic coast, a territory including the northern half of modern Albania, giving Serbia access to the sea. In essence, Serbia was forced to exchange Macedonia for Albania, an issue that would play a key role in the eventual dissolution of the League in the spring of 1913, when the Great Powers insisted upon the creation of the Albanian state and denied Serbia her territorial gains in that direction.

Bulgaria, on her part, had held a long-term policy regarding the Ottomans since restoring her independence during the Russo-Turkish War. After the successful coup d'état
Coup d'état
A coup d'état state, literally: strike/blow of state)—also known as a coup, putsch, and overthrow—is the sudden, extrajudicial deposition of a government, usually by a small group of the existing state establishment—typically the military—to replace the deposed government with another body; either...

 for the incorporation of Eastern Rumelia
Eastern Rumelia
Eastern Rumelia or Eastern Roumelia was an administratively autonomous province in the Ottoman Empire and Principality of Bulgaria from 1878 to 1908. It was under full Bulgarian control from 1885 on, when it willingly united with the tributary Principality of Bulgaria after a bloodless revolution...

, she had orchestrated a methodical scenario of indirect expansion through the creation, in the multi-ethnic Ottoman-held Macedonia (for many centuries an administrative rather than a nationistic name), of a united, liberating and revolutionary organization, the IMRO, allegedly without national color. IMRO's rhetoric claimed to be speaking generally for liberation on behalf of the “Macedonian People”, declaring its anti-chauvinism
Chauvinism
Chauvinism, in its original and primary meaning, is an exaggerated, bellicose patriotism and a belief in national superiority and glory. It is an eponym of a possibly fictional French soldier Nicolas Chauvin who was credited with many superhuman feats in the Napoleonic wars.By extension it has come...

. In fact, it was a Bulgarian-backed organization created with the secret agenda of facilitating the incorporation of Thrace
Thrace
Thrace is a historical and geographic area in southeast Europe. As a geographical concept, Thrace designates a region bounded by the Balkan Mountains on the north, Rhodope Mountains and the Aegean Sea on the south, and by the Black Sea and the Sea of Marmara on the east...

 (Eastern and Western) and Macedonia (Aegean and the Vardar) into a new autonomous state (where the Bulgarian people were not a majority), as an intermediate step before unification with Bulgaria could take place in the same way as with Eastern Rumelia. After initial success, Serbia and especially Greece realized the true purpose of IMRO and consequently a vicious guerrilla war, the so-called Macedonian Struggle
Macedonian Struggle
The Macedonian Struggle was a series of social, political, cultural and military conflicts between Greeks and Bulgarians in the region of Ottoman Macedonia between 1904 and 1908...

 broke out between Bulgarian and Greek backed armed groups within Ottoman Macedonia. The conflict ended only when the Young Turks
Young Turks
The Young Turks , from French: Les Jeunes Turcs) were a coalition of various groups favouring reformation of the administration of the Ottoman Empire. The movement was against the absolute monarchy of the Ottoman Sultan and favoured a re-installation of the short-lived Kanûn-ı Esâsî constitution...

 movement came to power, promising reforms and equality of all Ottoman subjects regardless of religion or nationality. Bulgaria then turned to the more direct method of expansion through winning a war, building a large army for that purpose and started to see itself as the "Prussia
Prussia
Prussia was a German kingdom and historic state originating out of the Duchy of Prussia and the Margraviate of Brandenburg. For centuries, the House of Hohenzollern ruled Prussia, successfully expanding its size by way of an unusually well-organized and effective army. Prussia shaped the history...

 of the Balkans". But even so, it was clear that Bulgaria could not win a war against the Ottomans alone, and an alliance was necessary. By signing the military appendix to the original agreement Bulgaria aimed to use the Serbian army to seize most of Macedonia while concentrating her own army for the operations against Thrace with its major cities of Adrianople and Constantinople
Constantinople
Constantinople was the capital of the Roman, Eastern Roman, Byzantine, Latin, and Ottoman Empires. Throughout most of the Middle Ages, Constantinople was Europe's largest and wealthiest city.-Names:...

.

In Greece, army officers had revolted in August 1909 and secured the appointment of a progressive government under Eleftherios Venizelos
Eleftherios Venizelos
Eleftherios Venizelos was an eminent Greek revolutionary, a prominent and illustrious statesman as well as a charismatic leader in the early 20th century. Elected several times as Prime Minister of Greece and served from 1910 to 1920 and from 1928 to 1932...

, which they hoped would resolve the Cretan
Cretan State
The Cretan State was established in 1898, following the intervention by the Great Powers on the island of Crete. In 1897 an insurrection in Crete led the Ottoman Empire to declare war on Greece, which led the United Kingdom, France, Italy and Russia to intervene on the grounds that the Ottoman...

 issue in Greece's favour and reverse their defeat
Greco-Turkish War (1897)
The Greco-Turkish War of 1897, also called the Thirty Days' War and known as the Black '97 in Greece, was a war fought between the Kingdom of Greece and Ottoman Empire. Its immediate cause was the question over the status of the Ottoman province of Crete, whose Greek majority long desired union...

 of 1897 at the hands of the Ottomans. In the discussions that led Greece to join the League, Bulgaria refused to commit to any agreement on the distribution of territorial gains, unlike the deal with Serbia over Vardar Macedonia
Vardar Macedonia
Vardar Macedonia is an area in the north of the Macedonia . The borders of the area are those of the Republic of Macedonia. It covers an area of...

. The reason was Bulgaria's diplomatic policy of pushing Serbia into an agreement limiting her access to Macedonia, while at the same time refusing any such agreement with Greece. Having a low regard for the Greek Army's military effectiveness, the Bulgarian leadership estimated that, according to the military plans, their limited forces that had been deployed to the Macedonian theatre would be able to occupy the larger part of the region and the important port city of Thessaloniki
Thessaloniki
Thessaloniki , historically also known as Thessalonica, Salonika or Salonica, is the second-largest city in Greece and the capital of the region of Central Macedonia as well as the capital of the Decentralized Administration of Macedonia and Thrace...

 before the Greeks. The entry of Greece in the League however was essential for the allies, since Greece, alone among the Balkan states in possessing a major fleet, could preclude the mass transfer of Ottoman reinforcements from Asia directly into Europe by sea. As the Greek ambassador to Sofia
Sofia
Sofia is the capital and largest city of Bulgaria and the 12th largest city in the European Union with a population of 1.27 million people. It is located in western Bulgaria, at the foot of Mount Vitosha and approximately at the centre of the Balkan Peninsula.Prehistoric settlements were excavated...

 had put it during the negotiations that led to Greece's entry in the League: "Greece can provide 600,000 men for the war effort. 200,000 men in the field, and the fleet will be able to stop 400,000 men being landed by Turkey between Salonika and Gallipoli
Gallipoli
The Gallipoli peninsula is located in Turkish Thrace , the European part of Turkey, with the Aegean Sea to the west and the Dardanelles straits to the east. Gallipoli derives its name from the Greek "Καλλίπολις" , meaning "Beautiful City"...

."

Montenegro, a relatively small country but a close ally of Serbia was considered a second class participant. It took the invitation to the insistence of Serbia more as a favour, having limited local aspirations over the Sanjak
Sanjak
Sanjaks were administrative divisions of the Ottoman Empire. Sanjak, and the variant spellings sandjak, sanjaq, and sinjaq, are English transliterations of the Turkish word sancak, meaning district, banner, or flag...

 and the north Albanian city of Shkodra.

Another fact that helped the formation of the League was the evident inefficiency of the Ottoman army. The Ottomans were at war
Italo-Turkish War
The Italo-Turkish or Turco-Italian War was fought between the Ottoman Empire and the Kingdom of Italy from September 29, 1911 to October 18, 1912.As a result of this conflict, Italy was awarded the Ottoman provinces of Tripolitania, Fezzan, and...

 with Italy for a year (29 September 1911 to 18 October 1912) over Libya
Libya
Libya is an African country in the Maghreb region of North Africa bordered by the Mediterranean Sea to the north, Egypt to the east, Sudan to the southeast, Chad and Niger to the south, and Algeria and Tunisia to the west....

 after Italy had launched an invasion of Tripolitania
Tripolitania
Tripolitania or Tripolitana is a historic region and former province of Libya.Tripolitania was a separate Italian colony from 1927 to 1934...

. Although the Italians made little progress and Ottoman resistance, aided by the Libyans, proved stiffer than expected, the war exhausted the Ottoman state. In addition, the Italian occupation of the Greek-inhabited Dodecanese
Dodecanese
The Dodecanese are a group of 12 larger plus 150 smaller Greek islands in the Aegean Sea, of which 26 are inhabited. Τhis island group generally defines the eastern limit of the Sea of Crete. They belong to the Southern Sporades island group...

 Islands served as a warning for Greece of the consequences of staying out from a future war against the Ottomans.

Reaction of the Great Powers

These developments did not go unnoticed by the Great Powers, but although there was an official consensus between the Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

an Powers over the territorial integrity
Eastern Question
The "Eastern Question", in European history, encompasses the diplomatic and political problems posed by the decay of the Ottoman Empire. The expression does not apply to any one particular problem, but instead includes a variety of issues raised during the 18th, 19th, and 20th centuries, including...

 of the Ottoman Empire, which led to a stern warning to the Balkan states, unofficially each of them took a different diplomatic approach due to their conflicting interests in the area. As a result, any possible preventative effect of the common official warning was canceled by the mixed unofficial signals, and failed to prevent the outbreak of hostilities:
  • Russia
    Russian Empire
    The Russian Empire was a state that existed from 1721 until the Russian Revolution of 1917. It was the successor to the Tsardom of Russia and the predecessor of the Soviet Union...

     was a prime mover in the establishment of the League and saw it as an essential tool in case of a future war against her rival, the Austro-Hungarian Empire. But she was unaware of the Bulgarian plans over Thrace and Constantinople, territories on which she had long-held ambitions, and on which she had just secured a secret agreement of expansion from her allies France and Britain, as a reward in participating in the upcoming World War I
    World War I
    World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

     against the Central Powers
    Central Powers
    The Central Powers were one of the two warring factions in World War I , composed of the German Empire, the Austro-Hungarian Empire, the Ottoman Empire, and the Kingdom of Bulgaria...

    .

  • France
    French Third Republic
    The French Third Republic was the republican government of France from 1870, when the Second French Empire collapsed due to the French defeat in the Franco-Prussian War, to 1940, when France was overrun by Nazi Germany during World War II, resulting in the German and Italian occupations of France...

    , not feeling ready for a war against Germany in 1912, took a totally negative position against the League, firmly informing her ally Russia that she would not take part in a potential conflict between Russia and Austro-Hungary if it resulted from the actions of the Balkan League. The French however failed to achieve British participation in a common intervention to stop the upcoming Balkan conflict.

  • The British Empire
    British Empire
    The British Empire comprised the dominions, colonies, protectorates, mandates and other territories ruled or administered by the United Kingdom. It originated with the overseas colonies and trading posts established by England in the late 16th and early 17th centuries. At its height, it was the...

    , although officially a staunch supporter of the Ottoman Empire's integrity, took secret diplomatic steps encouraging the Greek entry into the League in order to counteract Russian influence. At the same time she encouraged the Bulgarian aspirations over Thrace, preferring a Bulgarian Thrace to a Russian one, despite the assurances she had given to the Russians in regard of their expansion there.

  • Austria-Hungary
    Austria-Hungary
    Austria-Hungary , more formally known as the Kingdoms and Lands Represented in the Imperial Council and the Lands of the Holy Hungarian Crown of Saint Stephen, was a constitutional monarchic union between the crowns of the Austrian Empire and the Kingdom of Hungary in...

    , struggling for an exit from the Adriatic and seeking ways for expansion in the south at the expense of the Ottoman Empire, was totally opposed to any other nation's expansion in the area. At the same time, the Habsburg empire had its own internal problems with the significant Slav populations that campaigned against the German-Hungarian control of the multinational state. Serbia, whose aspirations in the direction of Bosnia were no secret, was considered an enemy and the main tool of Russian machinations that were behind the agitation of Austria's Slav subjects.

  • Germany
    German Empire
    The German Empire refers to Germany during the "Second Reich" period from the unification of Germany and proclamation of Wilhelm I as German Emperor on 18 January 1871, to 1918, when it became a federal republic after defeat in World War I and the abdication of the Emperor, Wilhelm II.The German...

    , already heavily involved in the internal Ottoman politics, officially opposed a war against the Empire, but in her effort to win Bulgaria for the Central Powers
    Central Powers
    The Central Powers were one of the two warring factions in World War I , composed of the German Empire, the Austro-Hungarian Empire, the Ottoman Empire, and the Kingdom of Bulgaria...

    , and seeing the inevitability of Ottoman disintegration, was playing with the idea to replace the Balkan positions of the Ottomans with a friendly Greater Bulgaria in her San Stefano
    Treaty of San Stefano
    The Preliminary Treaty of San Stefano was a treaty between Russia and the Ottoman Empire signed at the end of the Russo-Turkish War, 1877–78...

     borders, an idea that was based on the German origin of the Bulgarian King and his anti-Russian sentiments.


For the Balkan League the opportunity was too good to be missed, as the Ottoman Empire was weak and riddled with internal strife. The allied governments intensified their military and diplomatic preparations. During the last days of September, the Balkan states and the Ottoman Empire mobilized their armies. The first state to declare war was Montenegro, on October 8, 1912, starting the First Balkan War
First Balkan War
The First Balkan War, which lasted from October 1912 to May 1913, pitted the Balkan League against the Ottoman Empire. The combined armies of the Balkan states overcame the numerically inferior and strategically disadvantaged Ottoman armies and achieved rapid success...

. The other three states, after issuing an ultimatum to the Porte on October 13, declared war on Turkey on October 17.

Aftermath

In the resulting war, the combined Balkan armies effectively destroyed Ottoman power in Europe in a series of victories. However, the League's triumph was short-lived. The antagonisms between the Balkan states still persisted, and after the successful conclusion of the First Balkan War
First Balkan War
The First Balkan War, which lasted from October 1912 to May 1913, pitted the Balkan League against the Ottoman Empire. The combined armies of the Balkan states overcame the numerically inferior and strategically disadvantaged Ottoman armies and achieved rapid success...

, they resurfaced, especially over the partition of Macedonia
Macedonia (region)
Macedonia is a geographical and historical region of the Balkan peninsula in southeastern Europe. Its boundaries have changed considerably over time, but nowadays the region is considered to include parts of five Balkan countries: Greece, the Republic of Macedonia, Bulgaria, Albania, Serbia, as...

. Mounting tensions effectively tore the League apart, and the Second Balkan War
Second Balkan War
The Second Balkan War was a conflict which broke out when Bulgaria, dissatisfied with its share of the spoils of the First Balkan War, attacked its former allies, Serbia and Greece, on 29 June 1913. Bulgaria had a prewar agreement about the division of region of Macedonia...

 broke out when Bulgaria, confident of a quick victory, attacked her former allies Serbia and Greece. The Serbian and Greek armies repulsed the Bulgarian offensive and counterattacked penetrating into Bulgaria. The Ottoman Empire and Romania
Kingdom of Romania
The Kingdom of Romania was the Romanian state based on a form of parliamentary monarchy between 13 March 1881 and 30 December 1947, specified by the first three Constitutions of Romania...

 took advantage of the situation and invaded Bulgaria too. The subsequent peace left Bulgaria with gains in territory, but led to the loss of Eastern Thrace to the Ottomans and most of Macedonia to the Greeks. Defeat turned Bulgaria into a revanchist country, ensuring her participation in the First World War on the side of the Central Powers
Central Powers
The Central Powers were one of the two warring factions in World War I , composed of the German Empire, the Austro-Hungarian Empire, the Ottoman Empire, and the Kingdom of Bulgaria...

, since her Balkan enemies (Serbia, Greece and Romania) were involved in the war on the side of the Entente
Allies of World War I
The Entente Powers were the countries at war with the Central Powers during World War I. The members of the Triple Entente were the United Kingdom, France, and the Russian Empire; Italy entered the war on their side in 1915...

.

During the war, the Greek king
George I of Greece
George I was King of Greece from 1863 to 1913. Originally a Danish prince, George was only 17 years old when he was elected king by the Greek National Assembly, which had deposed the former king Otto. His nomination was both suggested and supported by the Great Powers...

 was assassinated in Thessaloniki under yet unresolved conditions. That generated a shift in the Greek foreign policy from clearly pro-Entente to neutrality, since the new King
Constantine I of Greece
Constantine I was King of Greece from 1913 to 1917 and from 1920 to 1922. He was commander-in-chief of the Hellenic Army during the unsuccessful Greco-Turkish War of 1897 and led the Greek forces during the successful Balkan Wars of 1912–1913, in which Greece won Thessaloniki and doubled in...

, unlike his father and his popular Prime Minister
Eleftherios Venizelos
Eleftherios Venizelos was an eminent Greek revolutionary, a prominent and illustrious statesman as well as a charismatic leader in the early 20th century. Elected several times as Prime Minister of Greece and served from 1910 to 1920 and from 1928 to 1932...

, was pro-German and tried to keep the country neutral in the upcoming World War. With the outbreak of World War I
World War I
World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

 and the Entente's intervention in Macedonia, the conflict between king and first minister steadily deteriorated, leading eventually to the National Schism, that greatly contributed to the loss of the next war against Kemal
Mustafa Kemal Atatürk
Mustafa Kemal Atatürk was an Ottoman and Turkish army officer, revolutionary statesman, writer, and the first President of Turkey. He is credited with being the founder of the Republic of Turkey....

ist Turkey
Turkey
Turkey , known officially as the Republic of Turkey , is a Eurasian country located in Western Asia and in East Thrace in Southeastern Europe...

 in Asia Minor
Asia Minor
Asia Minor is a geographical location at the westernmost protrusion of Asia, also called Anatolia, and corresponds to the western two thirds of the Asian part of Turkey...

, and dominated Greek politics for over a half of a century.

The outcome of the Balkan Wars caused a permanent break-up of the Russo-Bulgarian alliance, and left Serbia as the only ally of Russia in this critical region. Victorious in two wars and enjoying Russia's full support, Serbia now had the necessary self-confidence to resume her aspirations over Austro-Hungarian occupied Bosnia, to ignite the July crisis of 1914 and to keep the uncompromising position that led, through the existing European chains of alliances, to the outbreak of World War I
World War I
World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

.

External links

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