What if Japan had not attack the US?

[Cmdrcain]

ORIGINAL: Chickenboy

The unprovoked attack also made American's thirst for vengeance legitimate and stoked the national animus needed to wage unrestricted warfare against a whole people.

yup

And why if germany had not declared war... that same would have made it a japan first and only thing..

[Cmdrcain]

ORIGINAL: xj900uk

Agreed 100%  A pre-emptive strike on PH (even though US intelligence should have known it was coming) united the USA like nothing else on earth and made everyone including jo public determined to see it through right to the bitter end, no matter how long it took.
Yamamoto knew this,  unlike most of the Japanese war-planners and strategists.  In a letter to his sister he wrote :  (translation varies slightly in a few texts)
'Those fools in Tokyo don't know what they're contemplating.  A limited war with America,  making huge early gains then sitting back and demanding a soft ceasfire?  They should realise that the only time they can dictate terms to the Americans is when our troops are marching up the steps of the White House.  And even then, I doubt they'd listen'.

The British burned Washington....


We weren't inclined to listen then either LOL