One thing that sets my alarm bells off is that this article seems to equate uranium with plutonium. They are vastly different. Not only are uranium enrichment processes very different than plutonium enrichment processes (with the former requiring huge numbers of cascading centrifuges and the latter a nuclear reactor), but a uranium weapon is very very different than a plutonium weapon. The former is relatively simple to build and requires essentially WW1 cannon technology, while the latter is very very hard to build and requires highly complex implosion technology. Something appears to be amiss with that article.