The Treaty of Versailles and the European Revolutions in the wake of World War I (23 August 1921)
Historical Map of Europe & the Mediterranean
With the collapse of the Ottoman Empire, Greece moved troops into western Turkey to protect the sizeable local Greek population and assert its historical claim over the region. Initially the war favored Greece, but by late 1921 the Turks were gaining the upper hand.
Little Entente formed between Czechoslovakia and Romania (Yugoslavia signs june 7)
Italian evacuation from Adalia
The last Italian forces withdraw from Antalya, southern Anatolia, avoiding clashing with the Turkish Nationalists and ending the Italian claim to the region.
Britain and Ireland
Battle of Sakarya
The invading Greek army advances on Turkish Nationalist lines on the Sakarya River, 80km from the Nationalist capital of Ankara. By September 2, the Greeks have captured Mount Chal and in the ensuing 10 days, some units come within 50km of Ankara. However, the Greeks are overextended and a Turkish counterattack on September 8 forces them to abandon the offensive and withdraw toward Eskişehir and Kara Hisar.