"For Japan, World War II is not resolved history. It is, incredibly, a recurring controversy. Several times in recent decades, Japan's leaders have expressed remorse and apologized for the nation's rampage through Asia in the 1930s and '40s. But to the governments and the surviving civilian victims in South Korea and elsewhere, the words and actions have always come up short. Japan has issued mea culpas, yes. But also from Japan: Revisionist textbooks in schools, a Tokyo shrine that memorializes convicted war criminals, an opaque stance by prime ministers on atonement for the war that shifts between "heartfelt apology" and "eternal, sincere condolences." The unshakable impression is of a nation struggling to accept full responsibility for the past cruelty of its military... Through the years, though Japan has expressed official regret for its wartime behavior, powerful right-wing forces at home have clung to the idea that Japan was not the villain. Japan has never matched the depth of contrition for WWII expressed by Germany. It's hard to avoid comparing Abe's private phone call with the symbolism of West German Chancellor Willy Brandt in 1970, who unexpectedly fell to his knees in genuflection while visiting the memorial to the Warsaw ghetto. Japan, a valued friend and ally of America, has made a significant act of contrition toward South Korea. The countries want to move ahead. If they can, they will see an economic and security benefit. The defense of Asia against North Korea, and the rise of China, will require far more cooperation from these partners. Ultimately it's up to South Korea to decide that the past is now the past. But Japan should continue to reflect publicly on the atrocities it committed, including the sex enslavement of women. It is a dark history."