Police officers react during a demonstration outside the Chinese liaison office in Hong Kong, Sunday, Feb. 20, 2011, as they follow calls for a ‘Jasmine Revolution.’ Jittery Chinese authorities wary of any domestic dissent staged a show of force Sunday to squelch a mysterious online call for a “Jasmine Revolution,” with only a handful of people joining protests apparently modeled... 

A lone protester steps into the path of an oncoming tank near Tahrir Square as demonstrations continued for a sixth straight day, January 30, 2011, in Cairo, Egypt. Could the popular revolt against authoritarian regimes of the Middle East ever spread to China, the world’s most populous nation? And if so, does the United States have a policy to deal with it? The ticklish question has been hovering...