South Korea will not agree on taking a territorial dispute with Japan concerning a group of South Korea-controlled islets in the Sea of Japan to the International Court of Justice in The Hague, South Korean Ambassador to Japan Ra Jong Yil said Wednesday.

"It is out of the question," Ra said in a speech to the Liberal Democratic Party's foreign policy panel.

Ra, who maintained the islets are originally territory of what is now South Korea, said the fact that Japan continuously claims the islets means Japan has yet to take a hard look at its colonial rule of the Korean Peninsula from 1910 to 1945.