In the Constantinople Agreement of 18 March 1915, after naval operations began in the run-up to the Gallipoli campaign, Russian Foreign Minister Sergei Sazonov wrote to the French and British ambassadors to claim Constantinople and the Dardanelles. During a five-week series of diplomatic talks, the United Kingdom and France, although they made their own claims, agreed on greater influence in Iran in the case of the United Kingdom and on the annexation of Syria (including Palestine) and Cilicia for France. The demands of the United Kingdom and France were unanimous and all parties agreed to leave the exact management of the holy sites to a subsequent settlement.  Without the Russian revolutions of 1917, Constantinople and the Strait could have been given after the Allied victory over Russia. This agreement and the Sykes-Picot agreement were complementary, because France and Great Britain had to satisfy Russia first to conclude the partition of the Middle East.  In April 1920, the San Remo Conference distributed Class A warrants on Syria to France and Iraq and Palestine to Britain. The same conference ratified an oil agreement reached at a London conference on 12 February, based on a slightly different version of the Long Berenger agreement, previously signed on 21 December in London. On April 21, Faisal headed east. Before leaving, on 17 April Clemenceau sent a draft letter in which the French government declared that it recognized “Syria`s right to independence in the form of a federation of autonomous governments in accordance with the traditions and wishes of the population”, claiming that Fayçal had recognized “that France is called a power, Syria the necessary assistance by various advisers On 20 April , Fayçal Clemenceau assured that he was “deeply impressed by the selfless kindness of your statements while I was in Paris, and I must thank you for first proposing the sending of the Allied Commission which will soon travel to the East to identify the wishes of the local peoples regarding the future organization of their country. I am sure the Syrian people will know how to show you their gratitude.  After the Constantinople Agreement, the French turned to the British to prepare their reciprocal desiderata on 8 April 1915, and the British set up the De Bunsen Committee to examine British options.  Zionism was not taken into account in the June 1915 Committee report, which concluded that in the event of division or zone of influence, there must be a British sphere of influence that included Palestine, while accepting that there be relevant French and Russian interests, as well as Islamic interests, in Jerusalem and in the holy places.   The following eleven points were made of the formal agreements between Great Britain, France and Russia.
In addition, in a sign of British discontent with Sykes-Picot, Sykes wrote in August a “Memorandum on the Asia Minor Agreement” to support his renegotiation, to make the French understand that they “are doing a good job, that is, they should change their policy if they cannot make military efforts consistent with their policies.”