This brings up a very good point that even though every country learns about each event in history, it is not the same. In an adult's life, a person might not know what happened during the Mai Lai massacre. An American may learn that a group of Americans went to a village and killed everyone there, but a Japanese textbook may say how most of the village consisted of women and very young children. These differences can construe someones political opinion or even their opinion on life. It might change someone's opinion on punishment for war crimes or how someone feels about victors justice.
While this topic is not mentioned in the news and media, I think that it is a big deal that is overlooked. I'm not sure what can be done about this, maybe the U.N. could agree on a standard national textbook. Do you think that there should be a standard textbook for everyone, or should each state decide what to put in their textbooks?