Scarbourgh Shoal puts Chinese planes too close

http://breakingdefense.com/2016/04/chinese-scarborough-shoal-base-would-threaten-manila/

-Building a base on the shoal would put Manilla in tactical fighter range.

– Putting S-400s on an island would cover Manilla + approaches to Taiwan

– China created a prefecture which means they are likely to make the move.

Is this a game of chess? Is this check for the U.S.?