Isnt it just a BIT suspicious that the explosion was right near a Nuke plant. It may have not been an international attack, but if it wasn't I highly doubt it was an accident. Maybe Iran had something planned and now has a second opinion on what they did. Hence the all the sudden, "Fuel Tank" story.
According to Sky News, now the Russians are saying there was no attack on the nuke plant (it is theirs, after all).