| Summary: | 碩士 === 國立中山大學 === 中國與亞太區域研究所 === 103 === U.S.-Japan alliance has an important relation with the security of Northeast Asian region. After the Post-Cold War, in the face of the new international situation of the collapse of the Soviet Union as well as the continued instability situation in Northeast Asian region, including China''s military expansion and military modernization, North Korea’s nuclear weapon development and missile crisis, and the military conflict in the Cross Strait, the U.S.-Japan alliance has conducted corresponding adjustment and transformation. Generally speaking, the important functions of the U.S.-Japan alliance in the Post-Cold War era include maintaining the balance of power in the region, preventing regional conflicts, deterring the potential rising of hegemony in the region, and preventing instable regions from power vacuum.
Therefore, the adjustment and transformation of the U.S.-Japan alliance in the Post-Cold War era is bound to affect power structure changes in the whole Northeast Asia and even the Asia-Pacific region and will have a significant impact on the interaction between countries as well as the stability in the regions. Furthermore, from the perspective of geopolitics, the Northeast Asian region is the key to maintaining the development of the entire Asia-Pacific region. In this study, the reasons why the U.S.-Japan alliance has strengthened bilateral relations and developed the cooperation level of "global security" in the Post-Cold War era are explored. Secondly, how the development and transformation of the U.S.-Japan alliance affects three main security issues in the Northeast Asian region, namely North Korea’s nuclear weapons, China’s military rising, and Cross-Strait security, is discussed. Finally, whether the U.S.-Japan security system after transformation is helpful to the stability in the Northeast Asia region or another instability fact leading to regional tensions is explored.
According to the research findings of this thesis, since the 2001 September 11 attacks, with the U.S. security strategy, military deployment adjustment, and Japan’s military and diplomatic cooperation, the U.S.-Japan alliance has gradually moved towards global strategic management due to anti-terrorism cooperation. In addition, the development and transformation of the U.S.-Japan alliance has played a balancing function in the Northeast Asian region and produced deterrence and constraints for security crisis in Northeast Asia. Finally, the U.S.-Japan alliance after the transformation has protected the current peaceful situation and stable development in the Northeast Asian region. Therefore, the U.S.-Japan alliance indeed plays a stabilizing role for the security in the Northeast Asian region.
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