It is clear that the Chinese leadership fears that Xinjiang separatism has and will continue to gain support from transnational Muslim extremists, with possible ramifications both for other latent Chinese separatist movements without a Muslim connection and for other Chinese Muslims without a separatist agenda," Van Wie Davis wrote. In 1996, China signed the Shanghai Treaty with Russia, Kazakhstan, Kyrgyzstan, and Tajikistan, using the accord to pressure Central Asian states to deter their ethnic Uighur minorities from supporting separatism in Xinjiang and to guarantee extradition of Uighurs fleeing China.