I'm sorry, I refuse to grant Miya Tanaka's premise that he was "defending his country."
It was a dastardly and unprovoked attack, no matter that FDR was thumbing his nose at them.
Then you must be very unfamiliar with history prior to WWII.
We had essentially declared economic war against Japan to protest their military ventures in China and southern Asia. We had cut off the import of strategic materials to them, including petroleum and steel. Their options were striking back or withering away.