AFAIK, they only sold un-enriched uranium. If so, you may not be aware, but enriching uranium is NOT a trivial process. If you can enrich uranium then you can

AFAIK, they only sold un-enriched uranium. If so, you may not be aware, but enriching uranium is NOT a trivial process. If you can enrich uranium then you can build an ICBM - it takes a lot of good engineering talent and very expensive equipment for either project. Unless you can somehow get another state to sell you the necessary stuff... but I'd consider purchasing uranium enrichment centrifuges vs purchasing ICBMs to be similarly highly-sketchy endeavours (the ICBM more so, but only because it can be used more or less immediately).