Why would they not have reactors? Plutonium bombs are more efficient than uranium bombs, so of course they should want to make some plutonium. Remember, they claim they need HEU for civilian reactors.
For sure, but a) they have a civilian reactor program, which surely produces spent fuel, and if they run it with HEU then they probably have breeders, and they might think they can figure out how to make Pu bombs. After all, the W88 bomb design got leaked in the 90s, remember?
