本文主要是從地緣政治的海陸爭霸觀點，論述從大航海年代以來全球戰略發展的基本型態；其中，亞太地區因特殊的地緣結構與歷史經歷，更形突顯海陸強權爭霸對亞太戰略形勢發展的關鍵性影響。文中的討論焦點與時程，則集中在第二次世界大戰後亞太地區海陸強權攻防與權力體系發展間的關係；特別是，分析從美、蘇與中（共）三角關係到美、中（共）雙邊關係，如何影響亞太地緣戰略的發展。美國在亞太的地緣戰略，除透過整合亞太地區海洋國家的聯盟關係，在亞洲陸地邊圍形成一可進可守的海洋戰略線－扇形戰略外；更企圖分化亞洲大陸上蘇、中（共）兩大陸上強權的關係。相對地，在亞洲大陸上，蘇聯與中共雖曾在冷戰時因各自的戰略考量而對立；但冷戰後因經濟與整體國力的消長，中共基本上已取代俄羅斯成為亞洲大陸上的主要強權，而且，中（共）、俄間更儼然形成統一戰線與美國進行戰略抗衡的態勢。冷戰後的亞太戰略形勢就在美、中（共）間的戰略部署中開展，而夾處在兩大海陸強權間的亞太國家則因各自的利害不同而歸屬其中一方，或遊走於兩邊以獲取最大的利益；當然，亞太地區主要的安全問題－朝鮮半島、臺灣海峽與南中國海爭議的解決，也深受兩大強權戰略的制約與影響。對位處亞太海陸爭霸戰略鋒線上的臺灣，則必須善用本身特殊的「中介」優勢，才能達成以發展來擴展生存的戰略。

This paper analyzes the general strategic pattern under the struggle of the Sea Power and Land Power inside the Asia-Pacific geopolitics. For its special geographic structure and historical experiences, the Asia-Pacific security situation is extremely influenced by the struggle of the Sea Power and Land Power. This study focuses the strategic interaction between the Sea Power and Land Power, the change of power structure in Asia-Pacific region after the II world war. From the triangular relation of USA, USSR, and PRC to bilateral relation of USA and PRC, this research especially wants to examine how this relation shift influences Asia-Pacific geopolitics. On one hand, the USA’s fan-spread strategy is to frame the ocean countries alliance in the rim of Asia Continent to become her deployed base. On the other hand, the USA global strategy attempts to divide the relation between the former USSR and PRC. Although these two countries had been opposed for their own strategic concern during cold war era, PRC has replaced Russia to be the main power in Asia Continent by its economic achievement and national strength building in post-cold war. Besides, PRC and Russia are likely to form the united frontline to match USA security strategy. The Asia-Pacific security setting after cold war has been shaped within the strategy arrangement of the USA and PRC. Compressed by the struggle of USA and PRC, other Asia-Pacific countries either pick one side for individual national interest or turn between two sides to maximize profits. Certainly, the solutions of security problems in the controversial areas of Korea Peninsula, Taiwan Strait, and South China Sea are constrained by the two main powers. However, under the struggle of the Sea Power and Land Power in Asia-Pacific, Taiwan has to take the advantage of the position of middle-way in order to maximize interests.

地緣政治;海權論;心臟地帶論;邊緣地帶論;扇形戰略;交往政策;弓箭（T）形發展戰略;三個三角戰略;朝鮮半島;臺灣海峽;南中國海;地緣經濟;中介位置

Geopolitics; Sea Power; Heartland; Rimland; the Fan-spread Strategy; Engagement; the Strategy of T; Three-Triangle-Strategy; Korea Peninsula; Taiwan Strait; South China Sea; Geo-economy; the Position of Middle-way