US Rejects China's 'Nature Reserve' Claim at Scarborough Reef

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- The US State Department rejected China's "national nature reserve" claim at Scarborough Reef near Luzon, calling it a "unilateral attempt" to deny Filipino fishermen traditional access using "dubious environmental and legal pretexts, backed by coercion."
- China refused to participate in the Permanent Court of Arbitration case in The Hague, which largely dismissed China's sweeping claims as unlawful, and continues advancing the "nine-dash line" asserting sovereignty across much of the South China Sea.
- Chinese ships fired water cannon on Filipino fishing vessels near Scarborough Shoal in recent weeks; Secretary of State Marco Rubio condemned the tactic at the ASEAN meeting in Manila in July, saying "the whole world saw it, and it's disturbing."
- The South China Sea is a strategic military zone through which more than $3 trillion in goods pass annually, stakes that critics say China seeks to convert into greater economic and military leverage.
- In April, the US held joint military operations with Canada and Australia in the region, reiterating support for a "free and open Indo-Pacific," while Saturday's statement affirmed Washington "stands with our Ally, the Philippines."
Why it matters: The US rejection puts diplomatic weight behind Manila in a decades-long territorial fight at Scarborough Reef, directly challenging Beijing's use of environmental designations as cover for maritime coercion. With over $3 trillion in annual shipping traversing these waters, unilateral claim enforcement raises costs and risk for commercial and military vessels alike — and tells other claimants Washington will contest "nature reserve" framing as a sovereignty tool, not just rhetoric.
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