It might not seem like much compared to other world events, but it means everything to the people concerned. No real punishment to the perpetrators, and a very late, reluctant, and muted acknowledgement from the Japanese government.
Also, here's a list of Japanese war apologies: https://en.wikipedia.org/wiki/List_of_war_apology_statements...
https://en.wikipedia.org/wiki/United_States_military_and_pro...
Did Kubrick invent "me love you long time" or was it a thing in Vietnam?
Two atomic bombs dropped on civilians and their capital city burned down to hashes with hundreds of thousand of casualties in few hours doesn't sound as "No real punishment" to me...
YMMV