Many sources claim that Sykes-Picot came into conflict with the Hussein-McMahon correspondence of 1915-1916 and that the publication of the agreement in November 1917 led to the resignation of Sir Henry McMahon.  There were several differences, iraq being the most obvious in the British red territory, and less obvious, the idea that British and French advisers would have control of the area designated as an Arab state. Finally, while the correspondence did not mention Palestine, Haifa and Acre should be British and the brown territory (a reduced Palestine) should become internationalized.  In his introduction to a symposium on Sykes-Picot in 2016, law professor Anghie notes that much of the agreement entrusts « trade and trade agreements, access to ports and the construction of railways. »  In May, Clayton Balfour stated that, in response to the indication that the agreement had been shaken, Picot had « allowed a significant revision to be necessary in light of the changes that have taken place in the situation since the development of the agreement », but that he nevertheless considered that « the agreement respects the principle in any case ». The agreement was drawn up and negotiated by the country`s diplomats over the next few months and signed by the Allies between 18 August and 26 September 1917.  Russia was not represented in this agreement because the Tsarist regime was in the midst of a revolution. The lack of Russian approval of the Saint-Jean-de-Maurienne agreement was then used by the British at the 1919 Paris Peace Conference to invalidate it, a position that greatly outraged the Italian government.  The Sykes-Picot Agreement (officially the 1916 Asia Minor Agreement) was a secret agreement between the British government and the French government during World War I on the division of the Ottoman Empire between the Allies. Russia also participated in the talks. Picot had made disproportionate gains over the real balance of forces in the Levant, a fact that the British took advantage of to recover most of the concessions made by Sykes after the war.
After Russia was abducted by the revolution, it was no longer necessary to obtain a buffer that protected Mesopotamia from Anatolia. Mosul was then attached to the new mandate of the British League of Nations in Iraq.