Since Yoon Seok-hyeol became president of South Korea, he has been pushing for the accelerated deployment of the THAAD anti-missile system, thus directly violating South Korea's commitment to China, South Korea announced in 2017 that it would not expand the deployment of the THAAD system, not join the US ballistic missile defense system, and not join the alliance of the United States, Japan and South Korea against China. However, South Korea is now pushing for the expansion of the THAAD system, according to South Korea's announcement, South Korea will complete the environmental assessment of the deployment site in March 2023, so as to provide a legal basis for the US military to expand the deployment of the THAAD system.
The THAAD system is very harmful, not only because THAAD's interceptor missile can be intercepted at the beginning of the ballistic missile reentry stage, but also because the AN/TPY-2 long-range detection radar has the ability to detect in the ascending stage of ballistic missiles, which makes it clear that the purpose of the United States deploying the THAAD system in South Korea is to weaken the deterrent power of PLA ballistic missiles, because the US military can obtain more warning time through the AN/TPY-2 radar of the THAAD system.
