Today's headlines are reportedly new discoveries of Chinese missiles being installed on some Spratly Islands/Reefs, in the southern portion of the South China Sea (SCS). This particularly includes Fiery Cross, Subi and Christmas Reefs. Reports of Chinese missiles and jetfighters in the Paracel Islands in the northern part of the SCS (especially Woody Island) go back to 2015-16. (The 2018 map above is courtesy libertyunyielding.com provided by KQN).
China's YJ-12 anti-ship missiles being installed on its Spratly SCS islands/reefs may have a range of 295 nmi. The YJ-12 footprints (see map) extend from the Philippine territorial waters and most of its Palawan Island in the East to about 50 nmi off the Vietnam coast in the East.
Even more Chinese range extending is the possibility that anti-ship and AA missile armed Chinese
J-11 (Flanker B++) fighters, observed on Woody Island since 2015, could be rotationally based on airstrips on Fiery Cross, Subi and Christmas. The J-11 has a very wide combat radius of 810 nmi.
Adding to China's Spratly island power is the reportedly new introduction of "the HQ-9B long-range, surface-to-air missiles [above] [that] could target aircraft, drones and cruise missiles within 160 nautical miles."
The presence of these Chinese missiles will likely make the US and Australia hesitant in staging ship and especially aircraft FONOPs across the South China Sea (SCS). The missiles will add to the anxiety of Southeast Asian nations and Taiwan that compete against each other and China in the Spratly and Paracel islands' SCS disputes.