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Attacks were planned and executed against the US West coast by use of balloon bomb. They were not effective.

Submarines did fire on the West coast, they were ineffective.

Submarine's designed to attack the Panama Canal were designed and built but they were never put to use.

Japan never intended an invasion of the US, or Hawaii, their attack on the Aleutian Islands was a feint. Japan wanted a free hand in the Pacific Ocean and hoped that by attacking the US Fleet they could buy time to consolidate their hold on Southeast Asia and China and then to effect a negotiated peace settlement. That failed.

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13y ago

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