"An unnamed Israeli security official"

Great source!

Anybody who believes the US will attack Iran is living in a dream world.

The reality on the ground is different. The theoretically possible scenarios are as follows:

1) Israel and/or the US threaten to attack but don't. Oil prices rise sharply, and the Iranians and the other oil producing countries earn extra billions. The effect is to suck money out of the west and transfer it to real or potential enemies.

2) Israel attacks alone, without nukes and hence maybe not effectively enough (we all know how good the Israelis are, like in Lebanon 2 years ago). Oil prices rise even more sharply. Iran's nuclear industry might suffer, but the Iranians and the other oil producing countries earn even bigger billions. The oil price rise could plunge the entire west into recession.

2) Israel attacks alone, with nukes. Heavy retaliation against Israel, and frankly they deserve it. Muslims all over the world are outraged, UN sanctions, terrorism, Iraq (with a lot of Shiites) turns unstable again. Oil prices? Don't ask.

3) The USA attacks as per DEBKA, maybe using nukes. Heavy retaliation against US interests all over the world, not just by Muslims. Pro-US governments everywhere will fall, Iraq is lost, maybe with a lot of US casualties too. This could escalate into a really hot war, and the economic repercussions don't bear thinking about.

In short, not even Bush is stupid enough to contemplate this. It would be the ultimate disaster not only for the USA, and would land him and his advisors in prison. Bush will, on the contrary, pursue diplomacy (no doubt ineffectively) until the problem passes to his successor, and do all he can to stop Israel doing anything, let alone doing anything himself.

So enjoy your fantasies. They're just that.