No, but Germany, for instance, isn't trying to whitewash history in its schoolbooks.

You did not bother to elucidate the point that you claim you were making. Instead providing just a single supporting example to illustrate an argument to generality. Even if we allow that "most countries' politicians" is supported by that single example and that the example is apt, your position on Japanese / US behaviour is only implied. I read it as "it's OK for [smaller country] as long as [bigger country] does it." My interpretation might well be wrong, but you could certainly do better in saying what you mean.