Peaceful Purposes? https://mosaicmagazine.com/picks/uncategorized/2013/11/peaceful-purposes/

November 13, 2013 | Jeremy Bernstein
About the author:

By refusing to abandon construction of a heavy-water reactor, Iran has laid bare its determination to produce plutonium—and thereby a nuclear bomb.

Read more on New York Review of Books: http://www.nybooks.com/blogs/nyrblog/2013/nov/11/irans-plutonium-game/