Tibetan monks walk past heavily armed paramilitary police on a street in Kangding, Ganzi prefecture in southwestern China's Sichuan province Tuesday, March 10, 2009. Authorities closed the last window into a restive Tibetan region in western China, tightening its security cordon for the 50th anniversary of the failed uprising that sent the Dalai Lama into exile.
Author: CBS News Staff
Credit: AP Photo/Ng Han Guan