本文旨在探討歐巴馬時期與川普時期的亞太政策，從而歸納兩屆政府亞太政策的轉變與延續。為了達到本論文的目的，本論文將會採用攻勢現實主義以及聯盟理論探討之。此外，本論文將會結合這兩套理論的內容，建立研究架構與提出若干假設，以討論美國的亞太政策，包括其對華政策、聯盟行為以及歐巴馬時期與川普時期亞太政策的調整之原因。

本文認為亞太地區權力結構的轉變是影響美國執行其亞太政策的主要因素。兩屆政府亞太政策的目標旨在維護美國的現有利益。雖然，歐巴馬的「亞太再平衡」與川普的「印太戰略」所使用的手段有所不同，但是兩者卻有異曲同工之妙。因此，川普的「印太戰略」實際上可視為「再平衡2.0」。

This thesis aims to discuss Obama’s and Trump’s Asia-Pacific policy, and to elaborate the change and continuity of U.S. policy in the Asia-Pacific from the Obama to the Trump Administration. To achieve these goals, this thesis adopts two international relations theories, one is John J. Mearsheimer’s Offensive Realism from, another is Stephen Walt’s Alliance Theory.

Based on the abovementioned theories, this thesis will generate a research framework and several hypotheses to explore the U.S. Asia-Pacific policy from the Obama to the Trump Administration, including its policy toward China, alliance behavior and reasons of the change from “Rebalancing Asia” to “Indo-Pacific” Strategy.

The author believes that the distribute of power in the Asia-Pacific determines the implementation of the U.S. Asia-Pacific policy from the Obama to the Trump Administration. Also, both strategies share the same goal even their tactics are totally different so that Trump’s “Indo-Pacific” Strategy is “Rebalancing 2.0.”

Content	vi
Content of Figure	viii
Content of Table	viii
Chapter 1.	Introduction	1
1.1.	Research Motivation and Purposes	1
1.2.	Literature Review	3
1.3.	Research Framework and Hypotheses	20
1.4.	Research Methods	31
1.5.	Scope of This Thesis	33
1.6.	Research Limitation	34
1.7.	Expected Contributions of this Thesis	34
1.8.	Arrangement of this Thesis	35
Chapter 2.	Obama’s “Rebalancing Asia” Strategy	38
2.1.	Asia-Pacific as both Opportunities and Challenges to the United States	39
2.2.	The Formation of “Rebalancing Asia” Strategy	41
2.2.1.	The Blueprint of “Rebalancing Asia” Strategy: To Promote the “Liberal International Order”	42
2.2.2.	The Implementation of “Rebalancing Asia” Strategy	47
2.2.3.	Sino-U.S. Relations under the Obama Administration	61
2.3.	Implications for “Rebalancing Asia” Strategy	70
2.4.	Summary	74
Chapter 3.	Trump’s “Indo-Pacific” Strategy	76
3.1.	Why China is a “Revisionist Power”?	77
3.2.	The Formation of “Indo-Pacific” Strategy	79
3.2.1.	Key Members of Trump’s “Indo-Pacific” Strategy	79
3.2.2.	Blueprint of “Indo-Pacific” Strategy	92
3.2.3.	Is that a “Trump Doctrine”?	94
3.2.4.	The Implementation of “Indo-Pacific” Strategy	96
3.2.5.	U.S. Policy Toward China under the Trump Administration	109
3.3.	Significance of “Indo-Pacific” Strategy	115
3.4.	Summary	118
Chapter 4.	Can “Indo-Pacific” Strategy be Regarded as “Rebalancing 2.0”?	120
4.1.	What are the things that the U.S. Really Wants?	120
4.2.	How the U.S. Operates its Strategy?	121
4.2.1.	Tactics between Obama and Trump	122
4.2.2.	The Relationship with the U.S. Allies and Partners	123
4.2.3.	China Policy under the Obama and the Trump Administration	124
4.2.4.	Agenda Setting between Obama and Trump	126
4.3.	Role of the U.S. Allies	128
4.4.	Reasons for the Change of U.S. Asia-Pacific Policy	129
4.5.	Can “Indo-Pacific” Strategy be Regarded as “Rebalancing Asia 2.0”?	133
4.6.	Summary	136
Chapter 5.	Conclusion	138
5.1.	Verification of Hypotheses	138
5.2.	Research Finding	146
5.3.	Prospect for Future Research	147
Selected Bibliography	149

Content of Figure

Figure 1 Research Framework	28
Figure 2 Landscape of the U.S.-led Liberal International Order	47

Content of Table

Table 1 Hypotheses and Items of Verification	30
Table 2 Freedom of Navigation Programs Conducted by the Obama Administration	57
Table 3 U.S. and China's Perspective on Various Issues	69
Table 4 Key Members of Trump's "Indo-Pacific" Strategy	90
Table 5 Summary of Pro-Taiwan Acts Introduced by the U.S. Congress under the Trump Administration	103
Table 6 Similarities of Obama’s “Rebalancing Asia” Strategy and Trump’s “Indo-Pacific” Strategy	137
Table 7 Comparison between Obama’s “Rebalancing Asia” Strategy and Trump’s “Indo-Pacific” Strategy	137
Table 8 Verification of Hypotheses	144

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