China resumes large-scale island-building at Antelope Reef in South China Sea
Primary region Asia
Tags Diplomacy
Regions Asia · China
China has been conducting major dredging and land reclamation at Antelope Reef in the Paracel Islands since October 2025, with the reclaimed land spanning approximately 1,490 acres — potentially China's largest artificial island in the South China Sea. Satellite imagery shows jetties, a helipad, and unpaved roads, with the straight outer edge suggesting a future 9,000-foot airstrip. This is China's first major island-building activity in the South China Sea since 2017. The buildup coincides with US military assets being drawn to the Middle East due to the Iran war, which analysts say China is exploiting. The Paracel Islands are claimed by both China and Vietnam, and the reef lies about 216 nautical miles from Da Nang, Vietnam.
Strategic interpretation
China's decision to resume island-building during the Iran conflict demonstrates Beijing's willingness to exploit US strategic distractions to advance its territorial objectives. The timing suggests a calculated assessment that the US lacks the bandwidth to respond forcefully. This move will heighten tensions with Vietnam and other ASEAN claimants, and complicates the diplomatic environment ahead of the Trump-Xi summit.