Air Defence Identification Zone
The Air Defense Identification Zone is airspace over land or water in which the ready identification, location, and control of civil aircraft over land or water is required in the interest of national security. China's Defence Ministry announced its ADIZ over a vast area in the East China Sea on November 23, 2013, which covers the area around the Diaoyu islands, controlled by Japan and known as the Senkaku Islands. The establishment of this zone drew strong opposition from Japan, the US and South Korea, becoming a flashpoint in East Asian politics and security.
Japan military planes flew unopposed in China air zone: official
Agence France-Presse in Tokyo
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Japanese military and paramilitary planes have flown through China’s newly declared air zone without any resistance from Chinese jets, an official and a report said on Thursday.
The country’s air force went unopposed into the Air Defence Identification Zone – which includes Tokyo-administered islands at the centre of a tense dispute between the two neighbours – the Asahi Shimbun reported, citing unnamed defence ministry sources.
A ministry official could not immediately confirm the report, although the well-equipped coastguard said it had also flown in the area over the East China Sea.
“We’ve not changed our normal operation of patrolling the area where China declared its defence zone without reporting flight plans, We’ve not encountered Chinese jets,” Yasutaka Nonaka, spokesman for Japan’s coastguard said.
The Chinese ADIZ requires aircraft to provide their flight plan, declare their nationality and maintain two-way radio communication – or face ”defensive emergency measures”.
But earlier this week the United States said it had sent B52 bombers into the area and the South Korean military said on Thursday one of its planes had flown through it without informing Beijing.