Abstract Over the past decade, the concepts of border have gained resonance in several disciplines within social sciences. While critical theory of borders has made tremendous advancements, scarcity of the scholarship in border studies is still evident. Borders are, in general, cultural, social, territorial, geographical, political, sexual and racial separators. This article deals with geographical borders in the Southeast Asian (SEA) region. Most countries in SEA share borders with each other. Under a range of circumstances and relationships such as trade, security and migration flows take place. Southeast Asia’s heterogeneity—politically, ethnically, religiously, economically, demographically and spatially—has crucial implications for neighbourly relationships, trade, border constructions, migration and refugee flows for all the countries. This article delves into the interplay between borders and heterogeneity in SEA and their outcomes. We argue that borders type determine the level of relationship between neighbouring countries and security outcome, trade and population mobility.

中文翻译：

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边界是国际关系的反映吗？东南亚边界透视

摘要 在过去的十年中，边界的概念在社会科学的多个学科中引起了共鸣。虽然边界批判理论取得了巨大进步，但边界研究的学术稀缺仍然很明显。一般来说，边界是文化、社会、领土、地理、政治、性别和种族的分隔符。本文涉及东南亚 (SEA) 地区的地理边界。东南亚的大多数国家都彼此接壤。贸易、安全和移民流动等一系列环境和关系都会发生。东南亚在政治、种族、宗教、经济、人口和空间方面的异质性对所有国家的睦邻关系、贸易、边境建设、移民和难民流动具有至关重要的影响。本文深入探讨了 SEA 中边界和异质性之间的相互作用及其结果。我们认为边界类型决定了邻国与安全结果、贸易和人口流动之间的关系水平。