us deploys antimissile system in south korea angering china videothe united states began installing the advanced antimissile system after north korea tested four ballistic missiles on monday correction an earlier version of this caption misidentified the military base as the article correctly notes the equipment arrived at osan airbase not yongsan garrisoncreditcreditus forces koreamarch 6 2017hong kong alarmed over north koreas increasingly provocative behavior the united states said tuesday that it had started to deploy an antimissile system in south korea that china has angrily opposed as a threat to its securitythe deployment of the terminal high altitude area defense system or thaad came after north korea launched four ballistic missiles on monday apparently in response to joint naval exercises by south korea and the united states those launchings led south korea to call for the accelerated deployment of thaada spokeswoman for the united states forces in south korea said that one of five major components of the missile system had arrived on monday officials said it could take a couple of months for the system to become fully operational defense secretary jim mattis had urged the south koreans to move ahead with the deployment of the system during a visit to seoul in februaryin telephone calls on monday to south korean and japanese leaders president trump said the united states would stand with its asian allies and take steps to defend against north koreas growing ballistic missile threatmr trump emphasized that the united states was taking steps to enhance our ability to deter and defend against north koreas ballistic missiles using the full range of united states military capabilities the white house said in a statementchina has been incensed over the deployment of the system fearing it could give the united states military the ability to quickly detect and track missiles launched in china according to analysts a spokesman for chinas ministry of foreign affairs geng shuang said tuesday that china would take the necessary steps to safeguard our own security interests and the consequences will be shouldered by the united states and south koreamr geng warned the two countries not to go further and further down the wrong roadyang xiyu a former senior chinese official who once oversaw talks with north korea said china was worried that the deployment of the system would open the door to a broader american network of antimissile systems in the region possibly in places like japan and the philippines to counter a growing chinese militarychina can see benefits only for a us regional plan not for south koreas national security interest he saidthe state media recently encouraged chinese citizens to boycott south korean products and companies over the thaad issue the chinese authorities recently forced the closing of 23 stores owned by lotte a south korean conglomerate that agreed to turn over land that it owned for use in the thaad deployment hundreds of chinese protested at lotte stores over the weekend some holding banners that read get out of chinaadm harry