One of the few remaining Korean women who Japanese troops forced into sexual slavery during World War II has died. Advocates for the few still alive say Japan should officially apologize and compensate the "comfort women." Dr. Katherine H.S. Moon is a professor of political science at Wellesley College and author of “Sex Among Allies: Military Prostitution in U.S.-Korea Relations." She elucidates the history of the women and the underlying tensions that likely makes a Japanese apology out of the question.