Japan, South Korea defy China air zone rules
Japanese and South Korean officials say their countries have both flown planes unannounced through China's newly-declared air defence zone.
China says planes transiting the zone, which covers areas claimed by Tokyo, Seoul and Taipei, must file plans.
The zone includes islands known as Senkaku in Japan and Diaoyu in China which are claimed by Japan, China and Taiwan.
Japan controls the islands, which have been the focus of a bitter and long-running dispute between Japan and China.
China, which established the air defence identification zone on Saturday, says aircraft must report a flight plan, communicate and identify themselves.
It says those who do not could face defensive emergency measures.
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