These things take a little time to understand.
I would have expected this out of Korea as a group, as a government statement, within at least one day, and sure enough, it came.
Generally, on a personal level, many Americans will not even apologize for something when they are clearly wrong...it is usually followed by a stammering, "but, but, but" as an added on excuse. That translates to a national level. In Asia, on the other hand, people apologize all over the place even if they are remotely connected. Gone to extremes, self remorse over one's actions can end up as suicide.
My, a whole book could be written on the contrasts of Occidental vs. Oriental "apologies".
sorry, slow server
Your post could be taken as offensive to many. Do the Japanese even acknowledge WWII atrocities?