Why would Russia and China agree to such a package? And why would, say, the United Nations agree to a move that would push the Iranians to dare the international community to confront it militarily over a global economic chokepoint? The smart people quoted in Sanger’s piece make the case for the sanctions by saying that the Iranian regime is more vulnerable to sanctions now, after the theft of the June 12 elections exposed popular anger and antipathy toward it, but not how to make those sanctions feasible.