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An American attack would be more effective, but it would take longer and probably lead to real warfare in the Persian Gulf, disrupting oil supplies and producing global responses. More to the point, it is difficult to believe that the Obama administration has the stomach for war. Its appalling public case of nerves over the war in Afghanistan—a “war of necessity,” as of only a few months ago—is indicative of its true temper. And if President Obama does not have the courage to accept hazards and ugly surprises, and if he cannot bring himself to deploy his rhetorical skills to the mobilization of opinion at home and abroad, he should not start a shooting war, even if the Iranians are already waging one against us.
That leaves living with an Iranian bomb. But this too has enormous hazards. It will engender—it has already quietly engendered—a nuclear arms race in the region. It will embolden the Iranian regime to make much more lethal mischief than it has even now. In a region that respects strength, it will enhance, not diminish, Iranian prestige. And it may yield the first nuclear attack since 1945 some time down the road.
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via Eliot A. Cohen: There Are Only Two Choices Left on Iran – WSJ.com.