South Korea has expanded its air defense zone. On a visit to the region, Vice President Joe Biden criticized China's recent declaration of its airspace zone.
Donald Kirk, Correspondent /
December 8, 2013
In another sign of rising tensions in Asian waters, South Korea declared a larger “air defense identification zone” (ADIZ) on Sunday, challenging China’s claim to a submerged rocky shoal that Korea controls and which lies southwest of the Korean peninsula.