The foreign fighters who helped topple Assad — and why China worries about them
detained, on the outskirts of Hotan in China's northwestern Xinjiang region.
**Greg Baker/AFP via Getty Images**
Greg Baker/AFP via Getty Images
Chinese authorities have also [cracked down](https://www.npr.org/2019/10/08/764153179/china-has-begun-moving-xinjiang-muslim-detainees-to-formal-prisons-relatives-say) on Uyghurs at home