Liancourt Rocks is name dok  do
because Anyongbog was recognized by the japaneseTaesoo for Liancourt Rocks and Ulleungdo
as Korean territory.
and Ulleungdo(korea) is closer to Liancourt Rocks
than Oki land(japan)
And the country that has effective control is Korea 
In addition,  when going to Liancourt Rocks , Japan has a travel without a road map licenses. It is said that is not in the San Francisco Treaty  but that Treaty in also only a smell number of large island.
Liancourt rocks is korea