Not gonna happen. The US Congress has already decided it will go en route towards sanctions on Iran. Congress has explicitly not authorized use of force yet. And Yes! Israel will do what the US tells it to.(BTW, I have predicted an Israeli raid on Iranian nuclear enrichment sites on or about March 20th, a week before the Knesset Parliamentary elections, on the Perisan New Year). That should give the HAMAS a wake-up call, as their main sponsors are brought to their knees. It should give the Russians and South Africans pause, as well, about their little displays of trying to 'reform' Hamas!
Iran Freedom Support Act
http://wwwc.house.gov/international_relations/109/ROSLEH_024_XML.PDF