| Acknowledgements | 第3-4页 |
| Abstract | 第4页 |
| 摘要 | 第5-8页 |
| Introduction | 第8-15页 |
| Chapter 1 Theoretical Framework | 第15-26页 |
| 1.1 Public diplomacy | 第15-19页 |
| 1.1.1 The definition of public diplomacy | 第15-17页 |
| 1.1.2 The history of American public diplomacy | 第17-19页 |
| 1.2 Digital diplomacy | 第19-21页 |
| 1.3 Twiplomacy | 第21-23页 |
| 1.4 The model of the effectiveness of public diplomacy | 第23-26页 |
| Chapter 2 The History of the Iran Nuclear Issue | 第26-31页 |
| 2.1 The rise of Iran nuclear issue from 1950 to 1979 | 第26页 |
| 2.2 The intensified Iran nuclear issue from 1979 to 2013 | 第26-28页 |
| 2.3 The mitigated Iran nuclear issue from 2013 to 2015 | 第28-31页 |
| Chapter 3 The Practice of Twiplomacy on the Iran Deal | 第31-50页 |
| 3.1 American official twitter accounts’ operation on the Iran deal | 第31-39页 |
| 3.1.1 American official accounts’ operation on the Iran nuclear issue in the first stage | 第32-35页 |
| 3.1.2 American official accounts’ operation on the Iran nuclear issue in the second stage | 第35-39页 |
| 3.2 American think-tank accounts’ operation on the Iran deal | 第39-46页 |
| 3.2.1 American think-tanks’ accounts’ operation on the Iran nuclear issue in the first stage | 第40-42页 |
| 3.2.2 American think-tanks’ accounts’ operation on the Iran nuclear issue in the second stage | 第42-46页 |
| 3.3 American political celebrities’ accounts’ operation on the Iran deal | 第46-50页 |
| Conclusion | 第50-54页 |
| Bibliography | 第54-59页 |
| Appendix | 第59-953页 |
| 学位论文答辩委员会组成人员名单 | 第953页 |
