What can stop Japan from continuing to deny the truth

Japanese Prime Minister Shinzo Abe's administration apologized in 2015 for the women and girls called "comfort women" who were forced into sexual slavery by Japanese army before and during the World War II. It offered to help the Republic of Korea set up a fund for the surviving victims. At the same time, it has kept clearing the wartime Japanese authorities of responsibilities for those women's ordeal.

Then, why should the Japanese government apologize?

On Feb 17, the National Archives of Japan submitted copies of 19 documents of "comfort women" to the country's Cabinet. The records are a collection of the minutes of the Tokyo War Crimes Tribunal and the trials of Japan's Class-B and Class-C war criminals. The files include the testimony of an Indonesia-based police officer who said he was ordered by the Japanese army to "take" about 200 women to Bali to serve as "comfort women".