亞太地區在冷戰結束後的重要性不斷上升，此地區也將是未來全球政治、經濟與軍事的中心。為維繫美國在亞太地區的利益、影響力與領導地位，歐巴馬政府提出亞太再平衡或轉向亞洲的戰略，並以深化同盟關係、擴展與建構夥伴關係、武力部署結構調整、借重區域機制等途徑，來達成美國的戰略目標。然而這樣的作為卻影響並改變亞太地區原有的權力格局，原以美國為首的態勢將不復見，因為中共在經濟與軍事方面的崛起，使得區域內國家難以在美國與中共之間選邊站。基本上，美國已經深化其同盟關係，並擴展夥伴關係，部分區域內強權國家也藉此發展其關係，合縱連橫的情景屢見不鮮。在未來，亞太的格局將依然以美國及中共的權力對峙為主，但又會出現數個小型的權力次核心，整體的緊張與衝突情景不斷，而俄羅斯的走向似乎將左右未來的權力競逐態勢。

After the end of the Cold War, the importance of the Asia-Pacific continues to increase, and the region will become a political, economic and military center of the world. To maintain the interest, influence and leadership of the US in the Asia-Pacific region, the Obama Administration proposes the “Rebalancing toward Asia” or “Pivot to Asia” policy to achieve US strategic goal by means such as deepening alliance, expanding and building partnership, adjusting the structure of force deployment and taking advantage of regional mechanisms. Nevertheless, such measures affect and change the original power structure of the region. Given the economic and military rise of the Mainland China, the posture led by the US will no longer exist, leaving a dilemma for regional countries to choose sides. Basically, the US has deepened its regional alliance and expanded partnership. Some of the regional powers also take this opportunity to develop their relations with the US. In the future, the power confrontation between the US and Mainland China will continue to dominate the structure in the Asia-Pacific. In the meantime, several sub-powers will rise as well. Tensions and conflicts will persist. The course taken by Russia will seem to steer the future competition for power.