From Newsweek, Oct. 1:

Is this a sign the more hawkish line on Iran is being sidelined?:

There are still voices pushing for firmer action against Tehran, most notably within Vice President Dick Cheney's office. But the steady departure of administration neocons over the past two years has also helped tilt the balance away from war. One official who pushed a particularly hawkish line on Iran was David Wurmser, who had served since 2003 as Cheney's Middle East adviser. A spokeswoman at Cheney's office confirmed to NEWSWEEK that Wurmser left his position last month to "spend more time with his family." A few months before he quit, according to two knowledgeable sources, Wurmser told a small group of people that Cheney had been mulling the idea of pushing for limited Israeli missile strikes against the Iranian nuclear site at Natanz—and perhaps other sites—in order to provoke Tehran into lashing out. The Iranian reaction would then give Washington a pretext to launch strikes against military and nuclear targets in Iran. (Wurmser's remarks were first reported last week by Washington foreign-policy blogger Steven Clemons and corroborated by NEWSWEEK.) When NEWSWEEK attempted to reach Wurmser for comment, his wife, Meyrav, declined to put him on the phone and said the allegations were untrue. A spokeswoman at Cheney's office said the vice president "supports the president's policy on Iran."

Note that Newseek makes it sound like it would be Israel dragging the US into war:

Alternatively, Israel might count on Tehran to retaliate against American targets as well, drawing in the superpower. To avoid that outcome, Gardiner believes, Washington must prevent Israel from attacking in the first place. "The United States does not want to turn the possibility of a general war in the Middle East over to the decision making in Israel," he says. Does not want to, certainly—but might not have a choice.