China, in an early test of U.S. President Donald Trump, is nearly finished building almost two dozen structures on artificial islands in the South China Sea that appear designed to house long-range surface-to-air missiles, two U.S. officials told Reuters.
China claims almost all the South China Sea, which carries a third of the world's maritime traffic. Brunei, Malaysia, the Philippines, Taiwan and Vietnam also have claims. Trump's administration has called China's island building in the South China Sea illegal.
Building the concrete structures with retractable roofs on Subi, Mischief and Fiery Cross reefs, part of the Spratly Islands chain where China already has built military-length airstrips, could be considered a military escalation, the U.S. officials said in recent days, speaking on condition of anonymity.
"It is not like the Chinese to build anything in the South China Sea just to build it, and these structures resemble others that house SAM batteries, so the logical conclusion is that's what they are for," said a U.S. intelligence official.