The Asia Maritime Transparency Initiative (AMTI), part of Washington's Center for Strategic and International Studies, announced this week that China has largely completed construction of military installations on the artificial islands the nation has constructed in the South China Sea.
Armed with satellite images, its director, Greg Poling, showed new radar antennas on Fiery Cross and Subi.
China has nearly completed the construction of military facilities on the disputed South China Sea Islands, the US-based Asia Maritime Transparency Initiative (AMTI) think tank said.
The aerial pictures on the islands show that China has constructed enough concrete hangers for 24 fighter jets and four or five larger planes such as bombers.
The islands are located in the South China Sea, where several sovereign states have staked claims to the waters and its islands - through which an estimated $5 trillion (around £4 trillion) of trade passes through.
"Major construction of military and dual-use infrastructure on the..."
The three most developed locations, according to the CSIS report, are Subi, Mischief, and Fiery Cross Reefs in the Spratly Islands.
"But, sinabi ko, at any time during my term, we will have to talk about the arbitration of the China Sea and when the time comes, I will present to you the judgement... and we will not talk about anything except it. Sabi niya yes, ok", the President added.
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The Philippines and China are scheduled to start discussions on a bilateral mechanism on the South China Sea this coming May. "As for China deploying or not deploying necessary territorial defensive facilities on its own territory, this is a matter that is within the scope of Chinese sovereignty", she said.
Images released by the Asia Maritime Transparency Initiative, AMTI, taken in early March, show almost completed defense infrastructure on three of China's largest artificial islands in the disputed Spratly chain: Fiery Cross, Mischief and Subi reefs.
In February, it warned that Woody Island, the largest of the Paracel Islands, was home to "an airstrip, hangars, and a deployment of HQ-9 surface-to-air missile batteries", as well as the beginnings of seven new harbors.
China has since gone on to build airfields at the Spratly Islands, as well as a harbor, cement plants, loading piers, communication facilities, defense structures, lighthouses, and went on with dredging activities in areas such as Mischief Reef. China claimed the reef in 2012, but the USA warned them not to carry out any reclamation works as they have done elsewhere because the islands are part of global territory.
The Philippine government released surveillance pictures of Chinese coast guard ships and barges at a disputed shoal in the South China Sea.
The establishment of an Air Defense Identification Zone, dubbed ADIZ, in the South China Sea has always been considered a possibility by analysts, especially in the wake of July's global court decision against China's maritime claims.
Finally, after years of failed attempts, the Philippines and China will talk one-on-one about their overlapping claims in the South China Sea.