In 1951, at the San Francisco Conference on the Treaty of San Francisco with Japan, which does not formally state which nations are sovereign over these islands, Vietnam's representative claimed that both the Paracel and Spratly Islands are territory of Vietnam, and was met with no challenge from the nations at the conference. However neither the People's Republic of China nor the Republic of China (Taiwan) were invited to the San Francisco Peace Conference and therefore neither signed this treaty.
After the French left in 1956, South Vietnam replaced the French in controlling the islands.
The islands have no indigenous inhabitants. The PRC announced plans in 1997 to open the islands for tourism. The small Chinese port facilities on Woody Island and Duncan Island are being expanded. There is currently one airport.