So long as the U.S. not only continues to maintain its huge nuclear arsenal, but turns a blind eye to Israeli nukes, it has no moral authority to demand other nations dismantle theirs.
The truth about Israel's secret nuclear arsenal (the Guardian)
The exotic tale of the bomb hidden in the desert is a true story, though. It's just one that applies to another country. In an extraordinary feat of subterfuge, Israel managed to assemble an entire underground nuclear arsenal – now estimated at 80 warheads, on a par with India and Pakistan – and even tested a bomb nearly half a century ago, with a minimum of international outcry or even much public awareness of what it was doing.
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Meanwhile, western governments have played along with the policy of "opacity" by avoiding all mention of the issue. In 2009, when a veteran Washington reporter, Helen Thomas, asked Barack Obama in the first month of his presidency if he knew of any country in the Middle East with nuclear weapons, he dodged the trapdoor by saying only that he did not wish to "speculate".