According to a Wikileaks document, Israel ruled out in 2005 attacking the Iranian nuclear program. Ha'aretz:
In the first telegram, sent on December 2, 2005, American diplomats said their conversations with Israeli officials indicate that there is no chance of a military attack being carried out on Iran. A more detailed telegram was sent in January 2006, summing up a meeting between U.S. Congressman Gary Ackerman (a Democrat for New York ) and Dr. Ariel Levite, then deputy chief of Israel's Atomic Energy Commission.
In that cable, Levite is quoted as telling Ackerman that it would be too difficult for Israel to attack Iran's dispersed nuclear facilities.
In reference to these documents, Lara Friedman, the "director of policy and government relations" with Americans for Peace Now, tweeted:" Haaretz WikiLeaks exclusive: Israel ruled out military option on Iran years ago (so what about that Goldberg spin?)"
Two questions for Friedman:1) Does she believe that Israeli defense officials always tell the truth to American officials about their operational planning?
2) Does she believe that Benjamin Netanyahu, who was not prime minister in 2005, has actually ruled out a military strike against Iran?
If she answers "yes" to either of these questions, then she is far more naive about Israeli operations and intentions than one would expect a Peace Now official to be.
UPDATE: Lara Friedman has a long and an indignant response here.