South Korea and the United States started discussing the deployment of THAAD systems earlier in March, in response to a successful North Korean hydrogen bomb test and launch of a satellite into orbit on board a long-range rocket.
"This creates considerable challenges to the security of other countries, including Russia and China. I am talking about the US system THAAD, a missile system that… can not be considered other than the creation of a certain threat to China and Russia," Denisov said.
"We are aware that the plans to install a missile defense system had been considered and discussed long before the nuclear tests in North Korea, which effectively 'blew up' the situation around this issue," Denisov stressed.
THAAD is a US missile defense system capable of shooting down short-, medium- and intermediate-range ballistic missiles. In July 2015, North Korea said it might boost its nuclear deterrent should the United States deploy a mobile missile defense system in South Korea.