The Continent doesn't know the sea.Japan was familiar with the sea. They don't know anything about Sea of Japan or the Senkaku Islands.
North Korea Accuses Takeshima Labeling
South Korea failed to participate in the San Francisco Peace Treaty and Peace Conference.a Rusk letter sent to them.
MacArthur Line and Takeshima - South Korea does not know that it is a temporary fishing boundary line and not a national border.