South Korea says it has expanded its East China Sea air defense zone to partially overlap with a similar zone recently declared by China. The South Korean Defense Ministry said Sunday that its new zone would cover Ieodo – a submerged rock reef off the South Korean south coast, which China calls Suyan. Defense Ministry head of policy Jang Hyuk said, “We have explained our position to related... 

Key American allies in East Asia, Japan and South Korea, have followed US lead by sending military aircraft to fly through disputed airspace, which China unilaterally included last week in its air defense zone. Tokyo and Seoul sent its aircraft into the disputed areas following a similar flight on Monday by two unarmed American B-52 bombers. Neither country informed the Chinese of their plans beforehand,...