After the World War I, the Ottoman Empire was partitioned by the Entente. The Turkish National Movement in Anatolia culminated in the formation of the Grand National Assembly (GNA; ) by Mustafa Kemal Atatürk and his colleagues. After the end of the Turkish–Armenian, Franco-Turkish and Greco-Turkish fronts (often referred to as the Eastern Front, the Southern Front, and the Western Front of the war, respectively), the Treaty of Sèvres was abandoned and the Treaties of Kars (October 1921) and Lausanne (July 1923) were signed. The Allies left Anatolia and Eastern Thrace, and the Grand National Assembly of Turkey (which remains Turkey's primary legislative body today) declared the Republic of Turkey on 29 October 1923.