Hundreds of Japanese pundits urged their Prime Minister Shinzo Abe Monday to offer his own apology for Japan’s wartime crimes and atrocities.

The move comes a little over a month after Abe did not apologize for and ignored the issue of wartime sexual slavery in a speech before U.S. Congress, drawing condemnation from South Koreans.

South Korea and Japan will mark the 50th anniversary of the normalization of bilateral diplomatic ties on June 22. In August, Abe is also scheduled to deliver a major speech on the occasion of the 70th anniversary of the end of World War II.