Trita Parsi, president of the National Iranian American Council, assesses the high-stakes diplomatic sparring between Washington and Tehran. As the threat of hostilities hangs over the Middle East again, what should the United States policy toward Iran be? Parsi explores this question in his new book, *A Single Roll of the Dice: Obama's Diplomacy with Iran*. To write it he interviewed 70 high-ranking officials from the U.S., Iran, Europe, Israel, Saudi Arabia, Turkey, and Brazil—including the top American and Iranian negotiators. From this kaleidoscope of information, Parsi assembles all the pieces of the complex and often misunderstood details of the administration's efforts to end three decades of futility with Iran. Have the diplomatic efforts of the Obama administration toward Iran failed? Was the Bush administration's emphasis on military intervention, refusal to negotiate, and pursuit of regime change a better approach? How can the United States best address the ongoing turmoil in Tehran?"