
The Constantinople Agreement (also known as the Straits Agreement) comprised a secret
exchange of diplomatic correspondence between members of the
Triple Entente
The Triple Entente (from French ''entente'' meaning "friendship, understanding, agreement") describes the informal understanding between the Russian Empire, the French Third Republic, and the United Kingdom of Great Britain and Ireland as well as ...
from 4 March to 10 April 1915 during
World War I
World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was List of wars and anthropogenic disasters by death toll, one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, ...
.
France
France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan ar ...
and
Great Britain
Great Britain is an island in the North Atlantic Ocean off the northwest coast of continental Europe. With an area of , it is the largest of the British Isles, the largest European island and the ninth-largest island in the world. It is ...
promised to give
Constantinople
la, Constantinopolis ota, قسطنطينيه
, alternate_name = Byzantion (earlier Greek name), Nova Roma ("New Rome"), Miklagard/Miklagarth ( Old Norse), Tsargrad ( Slavic), Qustantiniya (Arabic), Basileuousa ("Queen of Cities"), Megalopolis ( ...
and the
Dardanelles
The Dardanelles (; tr, Çanakkale Boğazı, lit=Strait of Çanakkale, el, Δαρδανέλλια, translit=Dardanéllia), also known as the Strait of Gallipoli from the Gallipoli peninsula or from Classical Antiquity as the Hellespont (; ...
(which at the time were part of the
Ottoman Empire
The Ottoman Empire, * ; is an archaic version. The definite article forms and were synonymous * and el, Оθωμανική Αυτοκρατορία, Othōmanikē Avtokratoria, label=none * info page on book at Martin Luther University) ...
) to the
Russian Empire
The Russian Empire was an empire and the final period of the List of Russian monarchs, Russian monarchy from 1721 to 1917, ruling across large parts of Eurasia. It succeeded the Tsardom of Russia following the Treaty of Nystad, which ended th ...
in the event of victory. Britain and France put forward their own claims, to an increased sphere of influence in
Iran
Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkm ...
in the case of Britain and to the annexation of
Syria (including
Palestine
__NOTOC__
Palestine may refer to:
* State of Palestine, a state in Western Asia
* Palestine (region), a geographic region in Western Asia
* Palestinian territories, territories occupied by Israel since 1967, namely the West Bank (including East J ...
) and
Cilicia
Cilicia (); el, Κιλικία, ''Kilikía''; Middle Persian: ''klkyʾy'' (''Klikiyā''); Parthian language, Parthian: ''kylkyʾ'' (''Kilikiyā''); tr, Kilikya). is a geographical region in southern Anatolia in Turkey, extending inland from th ...
for France, all sides also agreeing that the governance of the
Holy Places
Sacred space, sacred ground, sacred place, sacred temple, holy ground, or holy place refers to a location which is deemed to be sacred or hallowed. The sacredness of a natural feature may accrue through tradition or be granted through a bless ...
and
Arabia
The Arabian Peninsula, (; ar, شِبْهُ الْجَزِيرَةِ الْعَرَبِيَّة, , "Arabian Peninsula" or , , "Island of the Arabs") or Arabia, is a peninsula of Western Asia, situated northeast of Africa on the Arabian Plate. ...
would be under independent
Muslim rule. The Greek government was neutral, but in 1915 it negotiated with the Allies, offering soldiers and especially a geographical launching point for attacks on the
Turkish Straits. Greece itself wanted control of Constantinople. Russia vetoed the Greek proposal, because its main war goal was to control the Straits, and take control of Constantinople.
Though the Allied attempt to seize the area in the
Gallipoli Campaign failed, Constantinople was nevertheless occupied by the victorious Allies at the end of the war in 1918. By that time, however, the
Russian Revolution
The Russian Revolution was a period of political and social revolution that took place in the former Russian Empire which began during the First World War. This period saw Russia abolish its monarchy and adopt a socialist form of government ...
had brought about Russian withdrawal from the war, and as it was no longer one of the Allied Powers the agreement was not implemented. Its existence had been revealed by the
Bolshevik
The Bolsheviks (russian: Большевики́, from большинство́ ''bol'shinstvó'', 'majority'),; derived from ''bol'shinstvó'' (большинство́), "majority", literally meaning "one of the majority". also known in English ...
government in 1917.
Historical background

Access to the
Turkish Straits was governed by the 1841
London Straits Convention
In the London Straits Convention concluded on 13 July 1841 between the Great Powers of Europe at the time—Russia, the United Kingdom, France, Austria and Prussia—the "ancient rule" of the Ottoman Empire was re-established by closing the Tur ...
which stipulated the closure of the straits to warships
and, after the
Crimean War
The Crimean War, , was fought from October 1853 to February 1856 between Russia and an ultimately victorious alliance of the Ottoman Empire, France, the United Kingdom and Piedmont-Sardinia.
Geopolitical causes of the war included t ...
, by the
Treaty of Paris (1856)
The Treaty of Paris of 1856 brought an end to the Crimean War between the Russian Empire and an alliance of the Ottoman Empire, the United Kingdom, the Second French Empire and the Kingdom of Sardinia.
The treaty, signed on 30 March 1856 at ...
which made universal the principle of commercial freedom at the same time as forbidding any militarization in and around the Black Sea, later amended by the
Treaty of London (1871)
Treaty of London (1871) was an international treaty signed on 13 March 1871 by Germany, Austria, the Ottoman Empire, the United Kingdom, France, Russia, and Italy.
Foreign Minister of the Russian Empire
The Minister of Foreign Affairs of the ...
and reaffirmed in the
Treaty of Berlin (1878)
The Treaty of Berlin (formally the Treaty between Austria-Hungary, France, Germany, Great Britain and Ireland, Italy, Russia, and the Ottoman Empire for the Settlement of Affairs in the East) was signed on 13 July 1878. In the aftermath of the ...
.
In early 1907, in the talks leading up to the
Anglo-Russian Convention
The Anglo-Russian Convention of 1907 (russian: Англо-Русская Конвенция 1907 г., translit=Anglo-Russkaya Konventsiya 1907 g.), or Convention between the United Kingdom and Russia relating to Persia, Afghanistan, and Tibet (; ...
, Count
Alexander Izvolsky, then Russian Minister of Foreign Affairs, raised the question of the Straits, and talks were carried on in London through the Russian ambassador,
Count Alexander Benckendorff
Count Alexander Philipp Konstantin Ludwig von Benckendorff (russian: link=no, Александр Константинович Бенкендорф, Alexander Konstantinovich Benkendorf; 1 August 1849 – 11 January 1917) was a Russian diplomat, of ...
. Little is known but the "suggestion appears to have been made that Russia should have free egress from the Black Sea through the Straits, while other powers should have the right to send their vessels of war into the Straits without going into the Black Sea" together with some talk of "Russia's occupying the Bosphorus and England the Dardanelles, after which the Straits might be opened to other warships as well." In the event, nothing came of the discussions at the time.
On 12 October 1908, the Russian Ambassador to France,
Aleksandr Nelidov in a conversation with the British Ambassador to France,
Lord Bertie, said that since Japan would not allow Russia to keep a
Pacific
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...
fleet, and since the
Baltic
Baltic may refer to:
Peoples and languages
*Baltic languages, a subfamily of Indo-European languages, including Lithuanian, Latvian and extinct Old Prussian
*Balts (or Baltic peoples), ethnic groups speaking the Baltic languages and/or originatin ...
was practically closed throughout the winter, it was essential for Russia that the Black Sea should be made "the home for the Russian fleet whence she can move to the Mediterranean, the Baltic and the Far East as necessity may require."
Alexander Izvolsky, the Russian Foreign Minister, in the latter part of 1908 was able to get conditional support for a change in the Straits regime from Austro-Hungarian Foreign Minister
Alois Lexa von Aehrenthal
Alois Leopold Johann Baptist Graf Lexa von Aehrenthal (27 September 1854 – 17 February 1912) was diplomat from the Austro-Hungarian Empire. Biographer Solomon Wank says he exuded a strong monarchical-conservative outlook, loyalty to the Empire, ...
, Italian Minister of Foreign Affairs
Tommaso Tittoni
Tommaso Tittoni (16 November 1855 – 7 February 1931) was an Italian diplomat, politician and Knight of the Annunziata. He was Italy's foreign minister from 1903 until 1909, except for a five-month period. He also was interim prime minister for ...
and the German Ambassador to Paris,
Wilhelm von Schoen as well as from Secretary of State for Foreign Affairs
Sir Edward Grey
Edward Grey, 1st Viscount Grey of Fallodon, (25 April 1862 – 7 September 1933), better known as Sir Edward Grey, was a British Liberal statesman and the main force behind British foreign policy in the era of the First World War.
An adher ...
, the latter on 14 October 1908, being clearest on the subject while at the same time indicating that Turkish agreement was a prerequisite.
During the
Bosnian Crisis of 1908, in the
Italo-Turkish War
The Italo-Turkish or Turco-Italian War ( tr, Trablusgarp Savaşı, "Tripolitanian War", it, Guerra di Libia, "War of Libya") was fought between the Kingdom of Italy and the Ottoman Empire from 29 September 1911, to 18 October 1912. As a result ...
of 1911/12 as well as during the
Balkan Wars
The Balkan Wars refers to a series of two conflicts that took place in the Balkan States in 1912 and 1913. In the First Balkan War, the four Balkan States of Greece, Serbia, Montenegro and Bulgaria declared war upon the Ottoman Empire and defe ...
of 1912/13, Russia made attempts to obtain the opening of the straits for Russian warships but failed for want of support from the
Great power
A great power is a sovereign state that is recognized as having the ability and expertise to exert its influence on a global scale. Great powers characteristically possess military and economic strength, as well as diplomatic and soft power inf ...
s.
In April/May 1912, the straits were closed for some weeks and in response to subsequent threats of closure, Russia indicated that it would take action in the event of a prolonged closure.
At the outbreak of war, the Ottoman Empire was diplomatically isolated; it had sought an alliance with Britain at the end of 1911 and between May and July 1914 with France, Russia and on 22 July with Germany, to no avail. Russia was concerned about the potential arrival in the Black Sea of two modern warships being built by British shipyards for the
Ottoman Navy, the , which had been completed and was making preparations to leave, and the . On 30 July,
Russian Minister of Foreign Affairs
The Minister of Foreign Affairs of the Russian Federation is a high-ranking Russian government official who heads the Ministry of Foreign Affairs of the Russian Federation. The foreign minister is one of the five so-called 'presidential' minis ...
Sergey Sazonov instructed Benckendorff:
it is a matter of the highest importance for us that Turkey should not receive the two dreadnoughts..point out to the English government the immense importance of this matter for us, and energetically insist upon the retention of these two ships in England."
First Lord of the Admiralty
The First Lord of the Admiralty, or formally the Office of the First Lord of the Admiralty, was the political head of the English and later British Royal Navy. He was the government's senior adviser on all naval affairs, responsible for the di ...
Winston Churchill had by then already decided on requisition and when the Turkish ambassador protested on 1 August, he was informed that "in view of the serious situation abroad it was not possible to allow a battleship to leave these waters and pass into the hands of a foreign buyer".
The
pursuit of ''Goeben'' and ''Breslau'' (two German battleships) by the
Royal Navy
The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by Kingdom of England, English and Kingdom of Scotland, Scottish kings from the early medieval period, the first major maritime engagements were foug ...
led to their being allowed to enter the Dardanelles on the 10 August 1914.
Details
Historian Dmitrii Likharev, analysing key contributions in the historiography of the subject points to contributions of C. Jay Smith who obtained access to the Asquith papers in the 1960s and to William Renzi in 1970 who made use of records released by the British National Archives to date Britain's promise of Constantinople to the Russians as of November 1914 and its genesis as being earlier in September
, prior to the Ottoman entry into the war.
From 4 March to 10 April 1915, the
Triple Entente
The Triple Entente (from French ''entente'' meaning "friendship, understanding, agreement") describes the informal understanding between the Russian Empire, the French Third Republic, and the United Kingdom of Great Britain and Ireland as well as ...
(Britain, France, and Russia) secretly discussed how to divide up the lands of the Ottoman Empire. Britain was to control an even larger zone in Iran while Russia would get the Ottoman capital, Constantinople. The Dardanelles were also promised to Russia. The language of the agreement described the following boundaries:
...the city of Constantinople
la, Constantinopolis ota, قسطنطينيه
, alternate_name = Byzantion (earlier Greek name), Nova Roma ("New Rome"), Miklagard/Miklagarth ( Old Norse), Tsargrad ( Slavic), Qustantiniya (Arabic), Basileuousa ("Queen of Cities"), Megalopolis ( ...
, the western bank of the Bosphorus
The Bosporus Strait (; grc, Βόσπορος ; tr, İstanbul Boğazı 'Istanbul strait', colloquially ''Boğaz'') or Bosphorus Strait is a natural strait and an internationally significant waterway located in Istanbul in northwestern Tu ...
, of the Sea of Marmara
The Sea of Marmara,; grc, Προποντίς, Προποντίδα, Propontís, Propontída also known as the Marmara Sea, is an inland sea located entirely within the borders of Turkey. It connects the Black Sea to the Aegean Sea via the ...
and of the Dardanelles
The Dardanelles (; tr, Çanakkale Boğazı, lit=Strait of Çanakkale, el, Δαρδανέλλια, translit=Dardanéllia), also known as the Strait of Gallipoli from the Gallipoli peninsula or from Classical Antiquity as the Hellespont (; ...
, as well as southern Thrace
Thrace (; el, Θράκη, Thráki; bg, Тракия, Trakiya; tr, Trakya) or Thrake is a geographical and historical region in Southeast Europe, now split among Bulgaria, Greece, and Turkey, which is bounded by the Balkan Mountains to ...
to the Enez
Enez is a town and a district of Edirne Province, in Thrace, Turkey. The ancient name of the town was Ainos ( el, Αίνος), Latinised as Aenus. The mayor is Özkan Günenç ( CHP). The population is 10,886 as of 2018.
Enez consists of an old ...
- Midye line... and... that part of the Asiatic shore that lies between the Bosphorus, the Sakarya River
The Sakarya (Sakara River, tr, Sakarya Irmağı; gr, Σαγγάριος, translit=Sangarios; Latin: ''Sangarius'') is the third longest river in Turkey. It runs through the region known in ancient times as Phrygia. It was considered one of th ...
and a point to be determined on the Gulf of Izmit, and the islands of the Sea of Marmara, the Imbros Islands and the Tenedos Islands.
Even though the British and the French sought to limit Russian claims, they were not able to do so and also had to contend with the possibility that Russia might make a separate peace with the Central Powers. The agreement was one of a series of agreements regarding the partition of the Ottoman Empire by the Triple Entente and Italy following the war, including the
Treaty of London (1915)
The Treaty of London ( it, Trattato di Londra) or the Pact of London () was a secret agreement concluded on 26 April 1915 by the United Kingdom, France, and Russia on the one part, and Italy on the other, in order to entice the latter to enter ...
, the
Sykes–Picot Agreement
The Sykes–Picot Agreement () was a 1916 secret treaty between the United Kingdom and France, with assent from the Russian Empire and the Kingdom of Italy, to define their mutually agreed Sphere of influence, spheres of influence and control in a ...
(1916) and the
Agreement of Saint-Jean-de-Maurienne (April to August 1917).
The British
Gallipoli Campaign (1915–16) was aimed at seizing the Dardanelles and Constantinople but was defeated by the Ottomans, and the Allies did not gain control of the region until
occupying it in November 1918, after the end of the war. By that time, the Communist
Bolsheviks
The Bolsheviks (russian: Большевики́, from большинство́ ''bol'shinstvó'', 'majority'),; derived from ''bol'shinstvó'' (большинство́), "majority", literally meaning "one of the majority". also known in English ...
had seized power in Russia during the
October Revolution
The October Revolution,. officially known as the Great October Socialist Revolution. in the Soviet Union, also known as the Bolshevik Revolution, was a revolution in Russia led by the Bolshevik Party of Vladimir Lenin that was a key mome ...
of 1917 and had signed
a separate peace
''A Separate Peace'' is a coming-of-age novel by John Knowles, published in 1958. Based on his earlier short story "Phineas", published in the May 1956 issue of ''Cosmopolitan'', it was Knowles's first published novel and became his best-kno ...
with the Central Powers in March 1918, dropping out of the war.
As the Allies therefore no longer considered Russia among their number, and, indeed, did not even recognize the legitimacy of the Bolshevik government, the agreement was never implemented.
See also
*
Diplomatic history of World War I
The diplomatic history of World War I covers the non-military interactions among the major players during World War I. For the domestic histories of participants see home front during World War I. For a longer-term perspective see international rel ...
References
Footnotes
Citations
Bibliography
* Fitzgerald, Edward Peter. "France's Middle Eastern Ambitions, the Sykes–Picot Negotiations, and the Oil Fields of Mosul." The Journal of Modern History 66.4 (1994): 697–725.
*
Fromkin, David. ''
A Peace to End All Peace
''A Peace to End All Peace: The Fall of the Ottoman Empire and the Creation of the Modern Middle East'' (also subtitled ''Creating the Modern Middle East, 1914–1922'') is a 1989 history book written by Pulitzer Prize for General Nonfiction final ...
''. N.p.: Henry Holt & Company, Incorporated, 2001. Print.
* Helmreich, Paul C. "Italy and the Anglo-French Repudiation of the 1917 St. Jean de Maurienne Agreement." The Journal of Modern HIstory 48.2 (1976): 99–139.
*Pınar Üre
Constantinople Agreement in
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