The Chinese are illegally deploying missiles on at least one of its island bases in the disputed waters of the South China Sea.
According to recent analysis, the People's Liberation Army Navy has been deploying SA-21 "Growler" surface-to-air missiles. The system is also known as the S-400 Triumf, and is considered to be one of the most advanced Russian designs in the world.
The news of the deployment comes days after the Center for Strategic and International Studies reported that China was building what appeared to be underground structures at three of their bases, including Mischief Reef and Fiery Cross Reef. The Chinese bases are capable of supporting a number of aircraft, and serve as unsinkable aircraft carriers. China also has launched its first Type 55 destroyer, a vessel roughly comparable to the Arleigh Burke-class of guided missile destroyers, and also deployed new maritime patrol aircraft to the disputed region.
China's seizure of the uninhabited islands in the South China Sea was ruled illegal by the Permanent Court of Arbitration last year. The proceedings prior to the sweeping ruling, though, were boycotted by China, which has been aggressively asserting its nine-dash-line claims on the maritime flashpoint.
The U.S. has been determined to challenge the Chinese claims in the region. This past weekend, the Arleigh Burke-class guided-missile destroyer USS Stethem (DDG 63) carried out an "innocent passage" through the South China Sea, coming within six miles of Triton Island. FoxNews.com reported that the Stethem was shadowed by a Chinese vessel.
A Flight IIA Arleigh Burke-class guided missile destroyer, USS Dewey (DDG 105), came within six miles of Mischief Reef this past May, after a pair of buzzing incidents between Chinese and American aircraft.
The White House has been calling out China on multiple fronts. Last month, at a conference in Singapore, Secretary of Defense James Mattis said China needed to stop "militarizing artificial islands and enforcing excessive maritime claims" in the maritime flashpoint. A report also hammered China for failing to stop human trafficking.