The Obamas are seeing how much hue and cry there is for or against an attack on Iran. Actually they already know the answer. America is fed up with pointless mideast wars in which America inserts itself between Israel and an enemy of Israel, escalating the war to epic proportions. At this point the Israel lobby will be doing what they can to flood the government with calls, letters, and emails calling for an immediate attack on Iran. The government is clever enough to see through these efforts. Anyway, what's so bad about Israel actually fighing it's own wars? There could be a valuable lesson for Israel in this.
U.S. to defend Syrian rebels with airpower, including from Assad (Reuters)
from the article: U.S. anxiety grows over possible Israeli plans on Iran