The speed and scale of China’s island-building spree have alarmed other countries with interests in the region. China announced in June that the creation of islands — moving sediment from the seafloor to a reef — would soon be completed. “The announcement marks a change in diplomatic tone, and indicates that China has reached its scheduled completion on several land reclamation projects and is now moving into the construction phase,” said Mira Rapp-Hooper, director of the Asia Maritime Transparency Initiative at the Center for Strategic and International Studies, a Washington research group. So far China has built port facilities, military buildings and an airstrip on the islands. The installations bolster China’s foothold in the Spratly Islands, a disputed scattering of reefs and islands in the South China Sea more than 500 miles from the Chinese mainland.
http://www.nytimes.com/interactive/2015/07/30/world/asia/what-china-has-been-building-in-the-south-china-sea.html?_r=0