China hinted at repercussions on Tuesday if President Obama meets the Dalai Lama as planned. It also rejected any talk of autonomy at the latest round of Tibet negotiations over the weekend.
Beijing's severe treatment of Uighurs – and Tibetans, too – may be an attempt to prevent a breakup similar to that of the Soviet Union.
China says keep out; the leader fears the Tibet tinderbox will again catch fire.
Woeser has sued the government, investigated Tibet's March uprising, and flouted the official line about Tibet.
Claiming his efforts have failed, Tibet's spiritual leader said exiled Tibetans should determine the course of negotiations with Beijing.
Officials say exiled leaders seek independence to break up China.
The Olympics in China offer Tibetans a chance to draw world attention to human rights issues.
Exiles in India vowed to defy a police ban on their march to Tibet, launched Monday.