China and Russia seem united in opposing the deployment of the American missile defense system called THAAD, even though Seoul and Washington are already deep in discussions on the matter.
For details, we turn to Kim Hyun-bin.

Senior Russian and Chinese officials shared their concerns about the possible deployment of a THAAD battery to the Korean peninsula.
According to China's Xinhua news agency on Tuesday,... the talks, which took place Monday, were led by Russia's Deputy Foreign Minister Igor Morgulov and China's Assistant Foreign Minister Kong Xuanyou.
The two expressed their firm opposition to the deployment, saying the system could undermine the strategic balance in the region.

South Korea says the deployment is based on its national security interests to better defend against North Korea's nuclear and missile threats.
In an interview with CNN on Monday, South Korean Defense Minister Han Min-koo said the THAAD deployment would drastically increase Seoul and Washington's capacity to counter North Korea's missile threats.
In addition, the Pentagon said Monday South Korea and the United States have made considerable progress in their negotiations on the deployment.
Spokesman Peter Cook said the two allies just have an unspecified number of complicated issues to iron out.
Sources in Seoul say the two governments are already discussing possible candidate sites in South Korea.
There's speculation an official announcement could be made during the annual South Korea-U.S. defense ministers' meeting in Washington in October.
Kim Hyun-bin, Arirang News.