The New York Times is running an advertisement to raise awareness of Japan’s handling of matters concerning Korean women who were forced to serve as sex slaves by Japanese soldiers during World War Two.

South Korean pop singer Kim Jang-hoon and visiting professor at Sungshin Women’s University in Seoul and public relations expert Suh Gyung-duk posted the ad in the U.S. daily on Tuesday under the title “Do You Remember?”

Kim and Suh posted a similar ad in the Times in March.

The recent ad depicts a photo of former West German Chancellor Willy Brandt on his knees in front of a monument erected for wartime victims in Warsaw in 1971.

The ad noted that the Japanese government has yet to issue an apology and provide compensation to the victims of wartime sexual slavery. The ad urged Japan to follow the example of Germany and promptly issue an apology to contribute to promoting peace in Northeast Asia.

The ad apparently comes in response to the Japanese government’s request for the removal of a monument in New Jersey for Asian victims of sexual slavery.