At a time when President Obama has moved troops out of Iraq and is moving them out of Afghanistan, it’s looking increasingly like our worries in the Middle East are far from over. Maybe it’s not unprecedented, but it’s highly unusual for a sitting secretary of defense to worry in print (to Washington Post columnist David Ignatius) that Israel could launch a strike against Iran as early as this spring. The point of the Israeli attack, according to Ignatius and Panetta, would be to stop Iran before it begins building a nuclear bomb. The U.S. is saying that it would find such a move foolhardy, and yet also reassuring both the Israeli and American publics that it is committed to Israel’s security.