The champagne (or, under the circumstances, the apple juice) was chilled. The relevant foreign ministers beckoned. It looked as if all was ready to allow the signing of an interim or limited agreement that would freeze elements of Iran’s nuclear program in exchange for a partial relaxation of much of the rest of the world’s economic sanctions. But then things unraveled. Is it time for a new approach, where all parties ditch interim negotiations and jump straight to final-status negotiatiobns?
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