China may be building a high-frequency radar installation in the disputed South China Sea, posing a bigger threat to the balance of power in one of the world’s busiest waterways than previously detected surface-to-air missiles, according to a report by the Center for Strategic & International Studies.

QuickTakeTerritorial Disputes

Construction of radar facilities at Cuarteron Reef, the southern-most of the features China claims in the Spratly Islands, appears to be nearly complete,