Moon should seize chance to reset ROK's positioning

Republic of Korea President Moon Jae-in's four-day state visit to China that begins on Wednesday is certainly another sign that there has been a thaw in the recently chilly China-ROK relationship.

But pleasant as it will no doubt be to the ears of his hosts, his promise not to use the Terminal High-Altitude Area Defense anti-missile system for purposes other than preventing nuclear/missile threats from Pyongyang, will be difficult to verify in practice.

Nor will his appeal for the two sides to view the matter from each other's perspective mitigate Beijing's worries about THAAD's potential threat to national security.