Full coverage: THAAD Deployment in South Korea

China and Russia are strongly opposed to the deployment of the THAAD system, as it has radar capabilities that can capture movement in parts of Chinese and Russian territories. One Russian expert says the deployment is a potential threat to regional peace and stability.

"The global anti-missile systems will not only do no good for promoting global security, but will also weaken global security. It will disrupt the global strategic balance which we've maintained since the second world war. The deployment will greatly increase the risk of military escalation -- which also includes the DPRK. It's a very bad signal for South Korea So I think for South Korea, the first interest is drop the plan," President of Russian Institute of Strategic Research Mikhail Remizov said.