From the conservative Daily Telegraph:

Israel is negotiating with the United States for permission to fly over Iraq as part of a plan to attack Iran's nuclear facilities, The Daily Telegraph can reveal.

To conduct surgical air strikes against Iran's nuclear programme, Israeli war planes would need to fly across Iraq. But to do so the Israeli military authorities in Tel Aviv need permission from the Pentagon.

A senior Israeli defence official said negotiations were now underway between the two countries for the US-led coalition in Iraq to provide an "air corridor" in the event of the Israeli government deciding on unilateral military action to prevent Teheran developing nuclear weapons.

I suppose the Iraqis themselves--a sovereign country, we are reminded by the Bush Administration when it's convenient--would be militarily helpless to stop Israeli overflights, but one can imagine that the backlash against U.S. troops by Iraqi Shiites would be swift and fierce. We might find ourselves longing for the days when we were merely caught in a civil war.

Update: Then again, the Israelis may need help just to find Iran.

Late update: Reuters reports that Israel is denying the report in the Telegraph. More here.