Iran engages in deceit (al taqiyya).
Iran Ready to Open N. Sites to Saudi Experts
TEHRAN (FNA)- A senior Iranian diplomat announced that the country is prepared to open its nuclear facilities to Saudi experts to remove the Arab state's possible concerns over its peaceful nuclear program
http://english.farsnews.com/newstext.php?nn=9005051348
Note what is also reported on Iran's nuclear program:
Ahmadinejad wants to go public with Iran nuclear program'
Intelligence assessment says Iran's president is in favor of shedding secrecy, but clerical leadership - fearing international reaction - opposes such a move.
http://www.haaretz.com/news/international/ahmadinejad-wants-to-go-public-with-iran-nuclear-program-1.374741
and
Iran Accelerates its Nuclear Program
While Arab uprisings and international economic crises have dominated world leaders' attention, Iran has accelerated its suspected nuclear weapons program, experts say.
http://www.realite-eu.org/site/apps/nlnet/content3.aspx?c=9dJBLLNkGiF&b=2315291&ct=11056273