| 摘要 | 第4-5页 |
| Abstract | 第5页 |
| Acknowledgements | 第6-8页 |
| Introduction | 第8-16页 |
| Chapter One Geographical Elements: Driving America to Become a PushingHand in the Ukraine Crisis | 第16-28页 |
| 1.1. The Significance of the Ukraine’s Geographical Position | 第16-25页 |
| 1.2. The Importance of the Sevastopol Port in America’s Black Sea Strategy | 第25-28页 |
| Chapter Two Underlying Political Gains：Motivating America to Turn into aPushing Hand in the Ukraine Crisis | 第28-38页 |
| 2.1. The Advantage for America’s Splitting the CIS | 第28-31页 |
| 2.2. The Facility of the NATO’s Eastward Expansion | 第31-38页 |
| Chapter Three Potential Economic Benefits: Prompting America to Grow into aPushing Hand in the Ukraine Crisis | 第38-52页 |
| 3.1. The Constraint of Europe’s Economy | 第38-45页 |
| 3.2. The Economic Interest of Energy | 第45-52页 |
| Conclusion | 第52-54页 |
| Works Cited | 第54-56页 |
