Public opinion in the Republic of Korea is divided over whether the deployment of the United States' Terminal High-Altitude Area Defense anti-missile system is in the national interest.

Many of those in their 20s, 30s or 40s disagree with the decision. And anti-THAAD lawmakers have demanded an open debate in the National Assembly to discuss whether the THAAD is really in the ROK's interests militarily, diplomatically and economically.

THAAD is incapable of defending against the potential missile threat from the Democratic People's Republic of Korea, as the DPRK's missiles travel at a lower altitude than those THAAD is designed to intercept. Even if that was not the case, one THAAD battery would not be able to provide protection against all the DPRK missiles. The capital Seoul and its adjacent metropolitan area, the country's most populous regions, are even outside the protection range of THAAD.