The Chinese Foreign Ministry on Sunday summoned the South Korean ambassador to register its displeasure with Seoul entering into talks with the U.S. regarding the potential deployment of THAAD to the Korean Peninsula.

However, their calls for “calm” following North Korea’s defiance of the international community and proliferation of technology that threatens the South appear to be finding less and less of a reception in Seoul.

South Korea and the United States announced on Sunday that they would enter into official discussions over the U.S.-made Terminal High Altitude Area Defense System, designed to shoot down ballistic missiles of short, medium