cold fjord writes: France24 reports, "Beijing on Saturday announced it was setting up an "air defence identification zone" over an area that includes islands controlled by Japan but claimed by China, in a move that could inflame the bitter territorial row. Along with the creation of the zone in the East China Sea, the defence ministry released a set of aircraft identification rules that must be followed by all planes entering the area, under penalty of intervention by the military. Aircraft are expected to provide their flight plan, clearly mark their nationality, and maintain two-way radio communication allowing them to "respond in a timely and accurate manner to the identification inquiries" from Chinese authorities. The outline of the new zone
... covers a wide area of the East China Sea between South Korea and Taiwan that includes the Tokyo-controlled islands known as the Senkakus to Japan and Diaoyous to China. "China's armed forces will adopt defensive emergency measures to respond to aircraft that do not cooperate in the identification or refuse to follow the instructions," according to the ministry. " — The Politico adds, "Secretary of Defense Chuck Hagel said Saturday the United States is “deeply concerned” over China’s move to establish an air defense zone over a string of disputed islands in the East China Sea. “We view this development as a destabilizing attempt to alter the status quo in the region,” Hagel said in a statement. “This unilateral action increases the risk of misunderstanding and miscalculations.”" — Spiegel Online has background on the conflict with Japan and on related regional issues. — This announcement follows the recent publication in Chinese state media of maps showing nuclear strike plans against the US.