1. muslim countries are complex, why don't other muslim countries support muslim Syria and Iran? Why don't rich Gulf oil countries support poor other muslim countries but buy weapons from west, are their neighbors muslim countries??
2. in history, Han dynasty(2000years ago), Xinjiang belonged to China; AD640--AD808 Tang dynasty controled Xinjiang; Uighur never had found one country in Xinjiang.
and history is history, now is now; we can't let Russia go back to Europe, and let India at the hand of England again; We can't let US give the land to America Indians, and let European go out of Australia; Roman Empire, the Austro-Hungarian Empire are past; 60 years ago, Germany has more than 0.5millon Square kilometers before WWII, now 0.35millon Square kilometers why??? Germany and Soviet Union got Poland, after war, Soviet didn't want give the land back and told to Poland"I occupied the part land of yours, and you can occupied the same from Germany", so today, Soviet got a part of Poland and Poland got apart of Germany.
3. Today, Uighurs is 45% of Xinjiang population, only 10million, impossible to be one country , as Uighur never had found one country in history; and Tibetan in tibet is only 2.7million, impossible to be a country too;
4. religion, East Asian countries such as China, N_SKorea, Japan, Singapore, no one dominant religion, and no one religion is not accepted in these countries. All of them are confucian and ancestor worship, which are not religions or only half-religions, some one often believe more than two religions.