Second East Turkestan Republic
The East Turkestan Republic (ETR) was a breakaway state that existed from 1944 to 1946, encompassing the three northernmost districts of Xinjiang Province, Republic of China: Ili, Tarbagatay (Tacheng) and Altay. It is often called the Second East Turkestan Republic to differentiate it from the First East Turkestan Republic (1933–1934) established exactly a decade earlier.
Source: Wikipedia — Second East Turkestan Republic (CC BY-SA 4.0)