The Sykes–Picot Agreement () was a 1916 secret treaty between the United Kingdom and France, with assent from Russia and Italy, to define their mutually agreed spheres of influence and control in an eventual partition of the Ottoman Empire.

The agreement was based on the premise that the Triple Entente would achieve success in defeating the Ottoman Empire during World War I and formed part of a series of secret agreements contemplating its partition. The primary negotiations leading to the agreement took place between 23 November 1915 and 3 January 1916, on which date the British and French diplomats, Mark Sykes and François Georges-Picot, initialled an agreed memorandum. The agreement was ratified by their respective governments on 9 and 16 May 1916.

The agreement effectively divided the Ottoman provinces outside the Arabian Peninsula into areas of British and French control and influence. The British- and French-controlled countries were divided by the Sykes–Picot line. The agreement allocated to the UK control of what is today southern Israel and Palestine, Jordan and southern Iraq, and an additional small area that included the ports of Haifa and Acre to allow access to the Mediterranean. France was to control southeastern Turkey, the Kurdistan Region, Syria and Lebanon. regarding a national Arab homeland in exchange for supporting the British against the Ottoman Empire. The British later claimed that Palestine was meant to be excluded from the area of Arab rule, as it is technically located west of Damascus: for obvious reasons the Zionists took the same position. The Arabs interpreted the letter as it reads: Lebanon, not Palestine, is to the west of Damascus and the other areas mentioned. The agreement, along with others, was made public by the Bolsheviks in Moscow on 23 November 1917 and repeated in The Manchester Guardian on 26 November 1917, such that "the British were embarrassed, the Arabs dismayed and the Turks delighted". The agreement's legacy has led to much resentment in the region, among Arabs in particular but also among Kurds who were denied an independent state.

Motivation and negotiations

Earlier agreements with Russia and Italy (March–April 1915)

In the Constantinople Agreement of 18 March 1915, following the start of naval operations in the run up to the Gallipoli campaign the Russian Foreign Minister, Sergey Sazonov, wrote to the French and UK ambassadors and staked a claim to Constantinople and the Dardanelles. In a series of diplomatic exchanges over five weeks, the UK and France both agreed, while putting forward their own claims, to an increased sphere of influence in Iran in the case of the UK and to an annexation of Syria (including Palestine) and Cilicia for France. The UK and French claims were both agreed, all sides also agreeing that the exact governance of the Holy Places was to be left for later settlement. Were it not for the Russian Revolutions of 1917, Constantinople and the Straits could have been given to Russia upon the Allied victory. This agreement and the Sykes–Picot Agreement were complementary, as France and Britain first had to satisfy Russia in order to finalize the partitioning of the Middle East.

In the Treaty of London of 26 April 1915, Article 9 included commitments regarding Italian participation in any partitioning of the Ottoman Empire. The article stated: "If France, Great Britain and Russia occupy any territories in Turkey in Asia during the course of the war, the Mediterranean region bordering on the Province of Adalia within the limits indicated above shall be reserved to Italy, who shall be entitled to occupy it."

Earlier agreement with the Arabs (July 1915 – March 1916)

thumb|1918 British government map: Map illustrating Territorial Negotiations between H.M.G. and King Hussein

While Sykes and Picot were in negotiations, discussions were proceeding in parallel between Hussein bin Ali, Sharif of Mecca, and Lieutenant Colonel Sir Henry McMahon, British High Commissioner to Egypt (the McMahon–Hussein Correspondence). Their correspondence comprised ten letters exchanged from July 1915 to March 1916, in which the British government agreed to recognize Arab independence after the war in exchange for the Sharif of Mecca launching the Arab Revolt against the Ottoman Empire.

The area of Arab independence was defined to be "bounded on the North by Mersina and Adana up to 37 degrees of latitude, on which degree fall Birijik, Urfa, Mardin, Midiat, Jerizat (Ibn ʿUma), Amadia, up to the border of Persia; on the east by the borders of Persia up to the Gulf of Basra; on the South by the Indian Ocean, with the exception of the position of Aden to remain as it is; on the west by the Red Sea, the Mediterranean Sea up to Mersina", with the exception of "portions of Syria" lying to the west of "the districts of Damascus, Homs, Hama and Aleppo".

Hussein's reply of 1 January to McMahon's 14 December 1915 was received at the Foreign Office, McMahon's cover stating:

<blockquote>Satisfactory as it may be to note his general acceptance for the time being of the proposed relations of France with Arabia, his reference to the future of those relations adumbrates a source of trouble which it will be wise not to ignore. I have on more than one occasion brought to the notice of His Majesty's Government the deep antipathy with which the Arabs regard the prospect of French Administration of any portion of Arab territory. In this lies considerable danger to our future relations with France, because difficult and even impossible though it may be to convince France of her mistake, if we do not endeavour to do so by warning her of the real state of Arab feeling, we may hereafter be accused of instigating or encouraging the opposition to the French, which the Arabs now threaten and will assuredly give.</blockquote>

After discussions, Grey instructed that the French be informed of the situation, although Paul Cambon did not take the agreement that seriously.

Anglo-French negotiations (October 1915 – March 1916)

thumb|left|350px|Minutes of the first negotiation on 23 November 1915, in which both sides set out their starting positions<br /><br />Picot proposed that the French area include: "the whole of [[Syria (region)|Syria and Palestine, and that their southern boundary must be the present Egypto-Turkish frontier," that the boundary line would then go to "Deir ez-Zor and from there Eastwards to the south of Kirkuk, turning east of that place and running north to include the whole of the Mosul district; thence West to include Diyarbekir, and on to include the whole of Cilicia."<br /><br />The British had proposed as an eastern boundary: "the line of the Euphrates as far south as Deir ez-Zor and thence in south-westerly direction." With respect to Palestine, the British noted that "Jerusalem, Nazareth and other places was a question apart, and affected various other nations including Russia: and that this question could not now be gone into."]]

On 21 October 1915, Grey met Cambon and suggested France appoint a representative to discuss the future borders of Syria as Britain wished to back the creation of an independent Arab state. At this point Grey was faced with competing claims from the French and from Hussein and the day before had sent a telegram to Cairo telling the High Commissioner to be as vague as possible in his next letter to the Sharif when discussing the northwestern, Syrian, corner of the territory Hussein claimed and left McMahon with "discretion in the matter as it is urgent and there is not time to discuss an exact formula", adding, "If something more precise than this is required you can give it."