No president ever ordered the dropping of nuclear bombs. Atomic bombs use fission. Nuclear bombs use an atomic bomb to ignite another bomb that uses fusion to do its damage. Huge difference. Truman ordered Atomic Bombs to be dropped...
And, as in many cases when it comes to old Democrats, I'm in complete agreement with him on that particular major decision. I'm also on board with JFK's "ask not what your country can do for you", MLK's "I have a dream that one day my four little children will be judged based on the content of their character and not the color of their skin", and the 1994 Dem Party Platform talking point that said "the era of Big Government is over". Don't be so blind as the Left as to castigate every word and choice of every person, just because of a label they have been given.
The point probably is the fear mongering against Goldwater was completely baseless. He was a small c isolationist leaning person. If anything he probably would have told the world to take a flying you know what, and just leave us alone. And now lets get down to fiscal policy.
Actually, in both cases (fission and fusion), the nucleus changes, they are both commonly referred to as "Nuclear Bombs". I think you are making the distinction between an Atomic bomb (Fusion) and a Thermonuclear bomb (fission).