The ongoing back-and-forth between the U.S. and Iran over the latter's nuclear ambitions is often compared to a chess game. But there's a notable difference: a chessboard only has two sides. Yesterday's announcement that Iran would trade in some of its low-enriched uranium for fuel rods to power a reactor that makes medical isotopes - a swap engineered by Turkey and Brazil - had some observers asking what Iran is up to.
Is the move a sign that the nation is dialing back its nuclear ambitions? Probably not, says Richard Rhodes, Pulitzer Prize-winning author and nuclear historian. His forthcoming book, The Twilight of The Bombs, will be published this August. The increasing importance of Brazil may indicate that the rules to this nuclear game are growing even more complicated.