http://www.washingtonpost.com/world/
"The U.S. has been ramping up efforts geared toward persuading Iran to prove its nuclear program is peaceful.
The U.S. believes Iran is working to develop nuclear weapons, a charge that Iran denies."

What about Israel?

It's common knowledge that Israel has over 100 nukes and has never confirmed their existence!
Neither have they

Why isn't the U.S. insisting that the Jews show "transparency?