Parties to the Treaty
George Dixon Grahame signed for the UK, Alexandre Millerand for France, and Count
Lelio Bonin Longare for Italy. Avetis Aharonian, the President of the Delegation of the First Republic of Armenia, which had signed the Treaty of Batum on 4 June 1918, was also a signatory. One Allied power, Greece, did not accept the borders as drawn, mainly due to the political change after the Greek legislative election, 1920, and never ratified the treaty.
There were three signatories for the Ottoman Empire: ex-Ambassador
Hadi Pasha, ex-Minister of Education Rıza Tevfik Bölükbaşı, and second secretary of the Ottoman embassy in Bern,
The Russian Soviet Federative Socialist Republic was not a party to the treaty because it had negotiated the Treaty of Brest-Litovsk with the Ottoman Empire in 1918. In that treaty, at the insistence of Grand Vizier Talaat Pasha, the Ottoman Empire regained the lands the Russian Empire had captured in the Russo-Turkish War (1877–78), specifically Ardahan, Kars, and Batumi.
The Treaty of Versailles was signed with the German Empire before the Sèvres treaty, and it annulled German concessions in the Ottoman sphere, including economic rights and enterprises. Also, France, Great Britain and Italy signed a secret "Tripartite Agreement" on the same date. The Tripartite Agreement confirmed Britain's oil and commercial concessions, and turned the former German enterprises in the Ottoman Empire over to a Tripartite corporation.
The United States, having refused in the Senate to assume a League of Nations mandate over Armenia, decided to not participate in the partitioning of the Ottoman Empire. The U.S. wanted a permanent peace as quickly as possible, with financial compensation for its military expenditure. However, after the American Senate rejected the Armenian mandate, its only hope was its inclusion in the treaty by the influential Greek prime minister, Eleftherios Venizelos.