I am always skeptical of WND reports, including this one. However, the White House denies it, which makes it more likely to be true, and http://www.ynetnews.com/articles/0,7340,L-4337728,00.html and http://www.timesofisrael.com/tehran-suspects-mossad-in-fordo-blast-says-iranian-expat/ and http://www.timesofisrael.com/israeli-intelligence-confirms-blast-at-iranian-nuclear-facility/ implicitly or directly support the story independent of WND. I'd rather see photographs (without jar Jar Binks in the foreground), but it's not just another WND story.
When and if commercial satellite imagery is available, you're going to be pretty disappointed.