Earlier this month, while visiting Seoul for talks with his South Korean counterpart, China's defense minister to the deployment in South Korea of the U.S. Terminal High Altitude Area Defense (THAAD) missile defense system. That by China's ambassador to South Korea in November, and the topic was reportedly also raised by Chinese President Xi Jinping in talks with South Korean President Park Geun-hye during Xi's visit to Seoul in July.
The vocal expressions of Chinese concern are puzzling, since the U.S. and South Korean governments have not held any formal talks on such a deployment, and Seoul has so far been reluctant to enter into a proposed U.S.-led regional missile defense architecture. Moreover, even if the U.S. deployed a THAAD battery in South Korea, it could hardly threaten China's enormous missile arsenal or even its limited number of ICBMs, whose fast flight times, concealed locations and mobile launchers would make for an elusive target.
__The author would like to thank Eric Armacanqui and Steven Martinez for providing research for this article and the John D. and Catherine T. MacArthur Foundation for supporting his nonproliferation research.__