Prez Yoon has been blaming former President Moon's administration for policy towards China with regards to the THAAD missile defense system.
A report in Hankyoreh (Outmoded as security system, THAAD retains rhetorical utility in Korea) stated as follows:
"Not only that, but the “three noes” are not “pledges” that the Moon Jae-in administration made, as Beijing has described them. They’re a military policy that has been in place since the Park Geun-hye administration.
It was the Park administration that declared from the time of the deployment controversy in 2016 that THAAD was “not a US missile defense system.” And it was the US Defense Department and USFK that affirmed that THAAD radar was “not monitoring China.”
In its efforts to denounce the Moon administration’s “capitulations to Beijing” and condemn it for a military policy that had existed since the time the conservatives were in office, the Yoon administration has been twisting the facts."
And most Korean news media promote Yoon's claims that the Moon administration implemented the THAAD policy with regards to China, when it was former President Park Geun-hye's administration that started the policy. Completely distorting history and facts.
Yoon states that he will install more THAAD systems in Korea, but THAAD will soon be outdated and both Korea and the US military are planning other more appropriate defense systems for Korea. THAAD is not ideal for defense of Korea. It is more effective as early warning for US missile defense systems.
Korea receives no data from THAAD or has any say in their operation. Why does Yoon want them? It is mainly for defense from long range missiles. Korea is a short range from China and North Korea, not long range. Pretty ignorant.