Historical Terrorism Part 1

There's a few people and terrorizing moments in the history of humanity that I'd like to address. And since there's some recent discussion on nuclear weaponry, I'll begin with that.

America, the largest producing nation of Nuclear and White Phosphorus (highly controversial, yet used by Israel [From U.S.] against Lebanon and Palestine) weapons, is the only nation to use Nuclear weaponry, in which they did so, killing approximately 250,000 civilians in Hiroshima and Nagasaki, Japan. The exact number of deaths is hard to estimate due to the post-bombing effects that take place, including cancer from the radiation. This was a very terrorizing moment in the history of humanity, and the American government let the Japanese people know of how terrifying it would be, and still followed through. This is what they sent to the Japanese civilians, sending chills through each of their spins before they were dropped another bomb on Nagasaki.

"We are in possession of the most destructive explosive ever devised by man. A single one of our newly developed atomic bombs is actually the equivalent in explosive power to what 2,000 of our giant B-29s can carry on a single mission. This awful fact is one for you to ponder and we solemnly assure you it is grimly accurate. We have just begun to to use this weapon against your homeland. If you still have any doubt, make inquiry as to what happened to Hiroshima when just one atomic bomb fell on that city."

Now, I understand that this was a part of a retaliation on the Pearl Harbor bombings. But what I don't understand is the only times America has been attacked, they, the superpower, were made to look like impotent, defenseless idiots. The nation, with the best air radar, detection and security has each time been unable to do anything about their attacks. First, some thousand airplanes, maybe a hundred ships or more, are moving over the ocean, and America is unable to detect them and defend themselves. Then, two hijacked planes crash into two towers in America's largest city, and they are both unable to defend themselves. At each point in time America was able to gain the peoples support in fighting a war. The Nazi's were considered horrible, terrorizing people, America's enemy. America terrorized Japan by being the only nation to use not one but two nuclear weapons.

http://en.wikipedia.org/wiki/Atomic_bombings_of_Hiroshima_and_Nagasaki
http://en.wikipedia.org/wiki/White_phosphorus_(weapon)
http://www.cfo.doe.gov/me70/manhattan/hiroshima.htm