And the Japanese bombed Pearl Harbor, didn't they?
And invaded China, and French Indochina, and threatened Australia, and in general waged a major war in the Pacific.
The difference between this behavior and Iraq's behavior is rather stark. The former government of Iraq was beastly to its own citizens, and invaded its neighbor, which conflict an international coalition dealt with over 10 years ago. We were the ones who invaded them. The supposed causes never materialized.
Also, Hirohito agreed to the occupation of Japan (after Hiroshima and Nagasaki), and urged his people to do the same.
"You broke it, you bought it" might apply, though it doesn't cover us with glory. The question is, do the people of Iraq want to be bought by the US?