I don't think nuclear weapons exist. Nuclear power may exist, but I haven't really looked into it that deeply.
Problems I have with nuclear weapon theory:
1. We went from theory to application in a very, very, short amount of time. Enrichment of U-235 to weapons grade was not only achieved incredibly fast, but the methods of refining were also produce incredibly fast.
2. Classification of nuclear technologies. If it is fake, no one that really knows for sure can ever tell the truth about the subject, period.
3. The world at the time was being bombarded with more propaganda than imaginable. Think about watching war film on the TV day in and day out, seeing it in the news papers, hearing it on the radio, at work, everywhere. They could have declared aliens landed in Alaska and everyone would have bought every last word of it. People aren't skeptical during turmoil, it's all knee jerk reaction.
4. 'Evidence' of the blasts in Japan could be attributable to any number of bombs. How do you know it was done by one bomb? You don't. How do you know the bomb(s) was dropped from a single plane? You don't. How do you know how big the blast radius was? You don't.
5. Why in god's name would you trust ANYTHING that came out of the FDR administration? Japanese internment camps, court packing, making gold illegal (
http://en.wikipedia.org/wiki/Executive_Order_6102 ), dragging us into the second world war, new deal and socialist agenda in general.
Sure, believe the man that made owning gold illegal (by executive order, which in and of itself is illegal). And while you're at it, why don't you go live in a government camp somewhere it's safe.