China has appealed for international help in the battle it says it is waging against Islamist militants in its far western region of Xinjiang, as Beijing seeks Western support for its own "war on terror" in the wake of the Paris attacks.

Hundreds of people have died in unrest in Xinjiang, home to the mostly Muslim Uighur people, and other parts of China over the past three years or so.

Beijing has blamed much of the violence on Islamist militants, led by the East Turkestan Islamic Movement (ETIM), a group it says has ties to al Qaeda and wants to establish an independent state called East Turkestan.