In response to a May announcement that Japan and the Philippines would launch maritime boundary delimitation talks, China has deployed survey and law enforcement ships to conduct a series of unprecedented operations in the Philippine Sea. The scale and character of China’s response suggest that these operations are not just about sending a signal to […] Continue Reading

Antelope Reef, March 17, 2026
Photo:  Antelope Reef, March 17, 2026

Island Tracker

Five claimants occupy nearly 70 disputed reefs and islets spread across the South China Sea. They have built more than 90 outposts on these contested features, many of which have seen expansion in recent years.

Maps of the Asia Pacific

AMTI’s interactive maps strive to provide the most complete, accurate, and up-to-date source of geospatial information on maritime Asia.

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