In his Senate confirmation hearing, Secretary of State Rex Tillerson said China should not be allowed access to islands it has built there. The White House also vowed to defend "international territories" in the strategic waterway.
However, last week U.S. Defense Secretary Jim Mattis suggested that diplomacy should be the priority in the South China Sea.
In comments carried on the foreign ministry`s website late on Tuesday, Wang said he had a "suggestion" for this American friends. "Brush up on the history of World War Two," Wang was quoted as saying during a visit to Canberra, Australia.
The 1943 Cairo Declaration and 1945 Potsdam Declaration clearly state that Japan had to return to China all Chinese territory taken by Japan, Wang said.
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