One conclusion key officials have reached is that a strike on six or eight Iranian facilities will not lead, as is generally assumed, to all-out war. This argument holds that the Iranians might choose to cover up an attack, in the manner of the Syrian government when its nuclear facility was destroyed by the Israeli air force in 2007. An Israeli strike wouldn’t focus on densely populated cities, so the Iranian government might be able to control, to some degree, the flow of information about it.

Some Israeli officials believe that Iran’s leaders might choose to play down the insult of a raid and launch a handful of rockets at Tel Aviv as an angry gesture, rather than declare all-out war. I’m not endorsing this view, but I was struck by its optimism. (A war game held by the U.S. military this month came to the opposite conclusion, according to the New York Times: A strike would likely lead to a wider war that could include the U.S.)…

Finally, and even more disquieting, was the contention I heard repeatedly that an Israeli strike in the next six months – – conducted before Iran can further harden its nuclear sites, or make them redundant — will set back the ayatollahs’ atomic ambitions at least five years. American military planners tend to think that Israel could do only a year or two worth of damage.