In April 2017, the first elements of the system for over-atmospheric interception of ballistic missiles were installed at the site of deployment in the former golf club in Seondju County of Gyeongsangnam province. The Ministry of Defense of South Korea reported that the installation of the systems should be completed by the end of the year. On October 22, 2017, the U.S. Forces Korea (USFK) said that the THAAD battery was fully deployed with the unit charged with operating the advanced missile defense system.
However, such unilateral actions worry other countries in the region - Russia and China, who fear that the main purpose of the deployment is to violate military parity and gain a strategic advantage by the United States.
On October 11, 2017, Russian Foreign Ministry spokesman Georgy Borisenko stated that the missile defense systems are directed not so much against the DPRK as against China and Russia: "These systems are absolutely unable to prevent North Korea from retaliating in case of aggression against it." According to the Russian diplomat, Seoul is in the reach zone of the North Korean artillery and the THAAD system is simply not needed as the claimed defense method.
On October 13, the deputy chief of the operational headquarters of the Joint Staff of the Central Military Council, Major-General Zhou Shangping said that the deployment of the US missile defense systems THAAD is directed against China and Russia and violates their strategic interests.
The statement of the representative of the Ministry of Defense of China was circulated according to the results Friday's Russian-Chinese meeting on the problem of THAAD within the framework of the work of the first committee of the UN General Assembly.
According to the Chinese representative, Seoul's deployment of elements of the North American global missile defense system "seriously undermines the strategic security interests of China, Russia and other countries."
Earlier, Beijing imposed sanctions on Seoul in the sphere of tourism and retail trade. However, the President of the Republic of Korea, Mr. Moon Zhe Ying, did not decline his decision. "Beijing should not try to influence South Korea's decision to deploy a THAAD missile defense system," he stressed. It is worth noting that the residents of Sonju are extremely concerned about the deployment of THAAD systems, since they believe that they will be the target of a missile strike by the DPRK, but the authorities of the Republic of Korea do not react to the protests of local residents.