The question for Israel is who will be blamed for the sudden jump in gas prices. Israel has been into the pockets of the American people for decades, but the American government always acted as a middleman for this transfer. An Israeli attack on Iran may have some Americans thinking that Israel is now picking their pockets directly and in a big way. This is not a pleasent consideration for Israel. Israel would prefer that Americans blame Iran for the Israeli attack. Israel has had long experience in blaming their victims for Israel's attacks, but lately, the results of this strategy have been mixed. It is a gamble for Israel. They don't want to alienate the common Americans just yet. Israel has a lot more use for them before it comes to that.
Ya'alon okays administrative detention of Jewish extremist suspected in church arson (Haaretz)
from the article: Barak reveals Israel's considerations for possible attack on Iran