How solid is evidence of Iran pursuing nuclear weapons?

An article in the Los Angeles Times by Bob Drogin and Kim Murphy entitled "U.N. calls U.S. data on Iran's nuclear aims unreliable - Tips about supposed secret weapons sites and documents with missile designs haven't panned out, diplomats say" reports that:

... officials said the CIA and other Western spy services had provided sensitive information to the Vienna-based International Atomic Energy Agency at least since 2002, when Iran's long-secret nuclear program was exposed. But none of the tips about supposed secret weapons sites provided clear evidence that the Islamic Republic was developing illicit weapons."Since 2002, pretty much all the intelligence that's come to us has proved to be wrong," a senior diplomat at the IAEA said. Another official here described the agency's intelligence stream as "very cold now" because "so little panned out."

Clearly, the proponents of confronting Iran over its alleged "nuclear ambitions" are using the same kind of dangerous connect-the-dots intelligence synthesis that was used to justify going after WMDs in Iraq.

What really bugs me is that the Democrats in Congress are asleep at the wheel and not doing anywhere near enough to confront the administration over Iran the administration's "ambitions" to attack Iran with as little regard to American interests and "blood and treasure" as we had when we "liberated" Iraq.

-- Jack Krupansky