In a statement after the report was published, the Philippine Foreign Ministry said any reclamation activities by China on unoccupied features would contravene agreements between Beijing and Southeast Asian nations on conduct in disputed waters, as well as a 2016 ruling by an international tribunal that said China’s claims had no legal basis.
“We are seriously concerned,” the ministry said, adding: “We have asked relevant Philippine agencies to verify and validate the contents of this report.”
China asserts rights to more than 80% of the South China Sea based on a 1947 map showing vague markings that have since become known as the “nine-dash line.” It has previously said it has the sovereign right to build upon its own territory.
Tensions between China and other claimants in the South China Sea — the Philippines, Taiwan, Malaysia, Indonesia, Vietnam and Brunei — have been rising for years as Beijing invested more in naval and coast guard ships to enforce its claims. The Spratly Islands, historically tiny and uninhabited, have taken on greater geopolitical significance given they straddle one of the world’s busiest shipping lanes and could have military significance, particularly if tensions over Taiwan trigger a regional war.