China on Saturday laid claim to
a block of airspace over islands at the heart of a dispute with
Japan in the East China Sea, threatening "defensive emergency
measures" against aircraft that do not comply with new
The Xinhua news agency published a map and coordinates of
the area It called "the East China Sea Air Defence
Identification Zone" as well as Defence Ministry identification
rules for aircraft in the area, which covers most of the Sea.
The rules are likely to anger Japan
Ties between the Asian powers have been strained for months
by the dispute over the islands, called the Diaoyu in China
the Senkaku in Japan
, which are believed to be surrounded by
Patrol ships from both countries have been shadowing each
other near the islets, raising fears that a confrontation could
develop into a clash.