Joe Klein keeps his eye on the prize:

Obama's moment of truth will come if Iran doesn't, ultimately, want to play. Will the "demons" rot away his policy judgment? Will he exaggerate Iran's power, as the Israelis and neoconservatives routinely do, turning a relatively modest regional player into an existential threat mad mullahs ready to blow up the world? Will he allow Republicans to force him into a tough-guy pose for domestic consumption? Will he suffer the delusion that U.S., or Israeli, power can "take out" the Iranian nuclear program without disastrous retribution?

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