关键词: 太平洋岛国, 澳大利亚, 地缘政治, 第二次世界大战

Abstract: The history when Australia’s geostrategy was influenced by Pacific island countries was divided by World War II into three stages. Before World War II, there was a lack of geo-strategy since Australia ignored the surrounding geo-environment, attached its national security to the distant British Empire, neglected the defensive barriers of neighboring islands, and inflicted wars on the country itself. The period of World War II was a stage of geo-strategic construction. With the establishment of the Australia-US wartime alliance, the air and sea routes in the Pacific Ocean became Australia’s “lifeline,” and Australia’s independent defense awareness was also continuously strengthened. Australia intended to include Pacific Island countries to its sphere of influence through the “Australian-New Zealand Agreement 1944”. After World War II, it was a period of enriched geopolitical strategy. In the context of increasingly prominent development issues in the Pacific island countries and the increasingly complex security situation in the island region, Australia has implemented assistant strategies to promote regional prosperity and stability. In the future, Australia will continue to maintain its position as the largest aid country in the region.

Key words: Pacific Island Countries, Australia, geopolitics, World War II