Thought the quote was more like this:
"You can not invade mainland US, because there is a rifle behind every door"
Not sure....
This one is his...."I fear that all we have done is to awaken a sleeping giant and fill him with a terrible resolve." concerning the attack on Pearl Harbor
So is this one..... "Should hostilities once break out between Japan and the United States, it is not enough that we take Guam and the Philippines, nor even Hawaii and San Francisco. We would have to march into Washington and sign the treaty in the White House. I wonder if our politicians (who speak so lightly of a Japanese-American war) have confidence as to the outcome and are prepared to make the necessary sacrifices?"
Found the reference to it and gun ownership at:
http://www.japantoday.com/jp/news/235281
"You cannot invade the mainland United States. There would be a rifle behind each blade of grass."
Great quote. This quote from Admiral Yamamoto certainly sounds compelling in support of the argument that Japan avoided invading the United States primarily due to the number of arms the regular citizenry possessed. I say ?gprimarily?h because this is the word used by a previous poster in an attempt to imply that the proliferation of privately-owned weapons due to the Right to Bear Arms was the main reason Japan did not attempt to overrun the US mainland during World War II. However, this quote falls far short of the mark for two reasons. For one, this is a historical inaccuracy, and you will be hard pressed to find a World War II historian who won?ft tell you the same thing.
For another, the quote does not truly reflect the attitudes of the entire Japanese military, but rather the attitude of Admiral Yamamoto and a minority voice in the Japanese government and military. Yamamoto fought hard against the military command for months preceding the war to convince them that attacking the United States directly was folly, but in the end, he lost and did as he was ordered. The attack at Pearl was his way of finding an acceptable balance in a no-win situation.
The reason (and I should say ?greasons?h because more often than not when discussing history, there is rarely ever just one) Japan refrained from invading the U.S. mainland was that it had no desire to conquer the United States, but rather to batter it?fs military to the negotiating table for a treaty for cessation of hostilities. Japan began a war with the US in order to force America to rescind the staunch oil and steel embargoes that were levied against Japan in response to Japanese aggression in Indochina. Japan needed those resources to create its empire. The Japanese feared the US because of its material and industrial superiority. The Japanese feared the US because of the military might that it would eventually and inevitably bring to bear against Japan, even after a ?gknockout?h strike at Pearl Harbor.
Admiral Yamamoto himself predicted quite accurately that Japan could never hope to defeat the United States because of this material and military superiority, and stated at the onset of the war that (to use the very same website that you provided) "In the first six to twelve months of a war with the United States and Great Britain I will run wild and win victory upon victory. But then, if the war continues after that, I have no expectation of success." He further stated that defeating the United States would involve marching all the way to the capital at Washington, D.C., something that Japan did not have the material resources to accomplish. His apprehension was not for fear of privately held weapons on the US mainland.
Interestingly, Admiral Yamamoto was one of the best suited military minds in Japan to recognize this, as he studied in America at Harvard to learn more about the enemy that Japan would someday face. But to attribute Japan?fs reluctance to invade the United States primarily to public gun ownership is ridiculously myopic.