 Complete the following phrase:  During the later years of China under the ROC, which was engaged against the Chinese Communists in the context of the Chinese Civil War, the Soviet Union under leader Joseph Stalin invaded Xinjiang and assisted a local rebellion at Ili Yining City. The rebellion led to the establishment of the Second East Turkistan Republic 19441949, which existed in three northern districts Ili, Tarbaghatai, Altai of Xinjiang with secret aid from the Soviet Union. After emerging victorious at the conclusion of the Chinese Civil War in 1949, the Peoples Liberation Army 