Winston Churchill wanted the major war criminals shot on six hours notice to all the allied powers--just confirm identity and shoot. (Or something like that.) And I'm sure there are others who felt that way.

The Emperor bowed to Obama first. If someone bowed to me, I'd bow back. However, you aren't supposed to shake hands at the same time. Obama screwed up--western civilizati on will fall.

You need to know how to observe Japanese  customs in a proper way. For example, how to barf on your host.