Answer:
The United States was at peace with that nation, and, at the solicitation of Japan, was still in conversation with its government and its Emperor looking toward the maintenance of peace in the Pacific.
Indeed, one hour after Japanese air squadrons had commenced bombing in the American island of Oahu, the Japanese Ambassador to the United States and his colleague delivered to our Secretary of State a formal reply to a recent American message. And, while this reply stated that it seemed useless to continue the existing diplomatic negotiations, it contained no threat or hint of war or of armed attack.
Explanation:
The U.S. were in talks regarding continued efforts toward peace when the attack occurred; the Japanese ambassador made a statement the day when still did not imply a sudden attack. The size and damages done by attack as well as distance from Japan showed plan was made over time.