I agree that you can run nuclear reactors without the capability for nuclear weapons. However, investment in nuclear reactors and in nuclear research reduces th

I agree that you can run nuclear reactors without the capability for nuclear weapons. However, investment in nuclear reactors and in nuclear research reduces the cost of nuclear weapons, so they are indeed dual-use. Of course, no one characterizes nuclear energy plants in Western countries as nuclear weapons research facilities, but it's perfectly reasonable to say they are dual-use. This isn't limited to nuclear energy, the term is also applicable to various things such as civilian aviation, image recognition technology, advanced metallurgy, camera technology etc... So I don't think you really disagree with who you're replying to. Yes, the facilities aren't exactly what you need, but they're a big step towards that, and generally research in the domain has a fair degree of applicability.