The United States has residual responsibility over all former Japanese territories.
Memorandum: Deputy Assistant Secretary of State for Far Eastern Affairs Economic Affairs (Jones)
Date: June 10, 1956
Subject: Paracel Islands, etc.
During the discussion, the Secretary pointed out that we might consider acting under the Japanese Treaty since the U.S. has residual responsibility over all former Japanese territories.
[ source: United States Department of State / Foreign relations of the United States, 1955-1957. China, Volume III (1955-1957), page 378 ]
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