The question he was answering was “why didn’t you tell your allies (like Japan) before attacking Iran?”

So his sarcastic answer of “why didn’t you tell the US before attacking us in WWII?” is dumb, tone deaf, and offensive.

Dumb because Japan and the US were enemies when Japan attacked Pearl Harbor… so why tf would the tell us beforehand? The question was “Why didn’t you tell your allies you were going to attack Iran,” not “Why didn’t you tell Iran you were going to attack Iran?”.

Tone deaf because he’s trying to making a joke in response to a serious question about war, and bringing up a sensitive topic between our two countries.

And offensive because he’s making it sound like Japan were the only ones who did awful things when we fought in WWII. Hot take probably, but the US did far more heinous things to Japan in WWII than they did to the US.