Check out Richard Rhodes' "The Making of the Atomic Bomb", the definitive tome on The Manhattan Project. You won't be able to put it down.
"Now I am become death, the destroyer of worlds..." From the Bhagavad Ghita, and quoted by Robert Oppenheimer upon witnessing the first atomic test blast in 1945. He also had a $50 bet with Enrico Fermi on whether or not the explosion would set the atmoshpere on fire.
One of our Trident submarines has the capability of taking out 200 cities. Not to worry. We'll melt Iran into a big green glass plate before they try that.
also- they played the footage of a cruise missile taking out a satellite from last year. I think its orbit was deteriorating and it had a lot of hydrazine left on it. I so hope they blast that Iranian satellite, but they probably won't because it would stir up all the sand monkeys.