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Beijing’s plans for South China Sea air defence identification zone cover Pratas, Paracel and Spratly islands, PLA source says
- Plans for airspace controls over one of the world’s most disputed waterways have been in the pipeline for a decade, military insider says
- Despite military build-up in region, Beijing remains wary of upsetting US and Southeast Asian neighbours with announcement of ADIZ, experts say
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Beijing has been making plans for an air defence identification zone (ADIZ) in the South China Sea since 2010, the same year it said it was considering the introduction of similar airspace controls over the East China Sea in a move that was widely criticised around the world, a military insider said.
The proposed ADIZ encompasses the Pratas, Paracel and Spratly island chains in the disputed waterway, according to a source from the People’s Liberation Army, who spoke on condition of anonymity.
The plans for the zone were as old as those for the East China Sea ADIZ – which Beijing said it was considering in 2010 and introduced in 2013 – the source said, adding that Chinese authorities were waiting for the right time to announce them.
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While Beijing might have been reticent on the subject, Taiwan’s defence ministry said on May 4 that it was aware of the mainland’s plans.

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An air defence identification zone is airspace over a typically undisputed area of land or water in which the monitoring and control of aircraft is performed in the interests of national security. While many countries have them, the concept is not defined or regulated by any international treaty or agency.
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