Understanding the truth about Japan and China requires an understanding of WWII and its various cover-ups.
The handling of post-war Japan by the United States is one of the greatest cases of injustice in history. Unit 731 is by far the greatest crime against humanity in the history of research, which was largely covered up by the U.S. after WWII. Some prisoners had their limbs frozen solid then amputated without anesthesia, then their torso was surgically opened up and examined while they screamed. Japan waged horrifying biological warfare against the Chinese civilian population, including gas gangrene, necrotizing fascitis, and bubonic plague. One Japanese soldier said he would take vials of typhoid and empty them into Chinese water wells whenever he passed them on patrol. On top of all this, they worshipped Hirohito as a god, giving an ironic parallel to the pharoah of Moses' time.
The use of the atom bombs are often points of criticism for opponents of American foreign policy, but this is a totally misdirected approach. The atom bombs were a mercy on Japan. That's right: a mercy. How?
After all that Japan did to Korea, SEA, China (look up the rape of Nanking), and Russia, including forcing thousands into prostitution, these countries wanted revenge. We all know what Russia did to east Germany--you cannot imagine what they would've done to Japan. If it weren't for the atom bomb, it would've been an all-out invasion by multiple foreign powers, resulting in a cocktail of rape and torture in revenge for the unprecedented atrocities Japan committed against so many.
Instead, the atom bombs left justice in the hands of the United States. What did they do? They acquitted everybody involved in Unit 731 in return for their research to be handed over. Nobody was tried and executed, like the Nuremberg trials in Germany. The Chinese, Koreans, and Russians were infuriated. From kidnapping and raping Korean daughters to burning alive, raping, bayoneting pregnant women, and massacring a million Chinese in Nanking, this is, to this day, perceived by millions as the greatest injustice in human history.
The atom bombs were nothing to east Asia--more Chinese died to biological warfare alone than both atom bombs combined. Japan also planned on unleashing bubonic plague on California--Google "Operation Cherry Blossoms at Night."
The only people the US owes an apology to are China, Russia, Korea, and SEA. Japan still acts like they did nothing wrong.