Just incase you think this is a myth.
Again,as long as Israel(non-member of the NNPT) holds an nuclear arsenal of over 200+++ wear heads plus numerous chenmical/biological warheads,it HAS NO VALID GRIPE AGAINST IRAN(a vlaid NNPT member just like the USA).
And remember that Israel is STILL DUMPING its nuclear waste/deploeted uranium in the Negev desert and near the Syrian/Jordaian borders and civilian water supplies.
http://www.vanunu.com/uscampaign/photos.html
Peace,Salaam,Shalom.